diff --git a/src/Numerics/LinearAlgebra/Complex/DenseVector.cs b/src/Numerics/LinearAlgebra/Complex/DenseVector.cs
index 9616250b..3c7575e1 100644
--- a/src/Numerics/LinearAlgebra/Complex/DenseVector.cs
+++ b/src/Numerics/LinearAlgebra/Complex/DenseVector.cs
@@ -3,7 +3,9 @@
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
-// Copyright (c) 2009-2010 Math.NET
+//
+// Copyright (c) 2009-2013 Math.NET
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -12,8 +14,10 @@
 // copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the Software.
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -281,21 +285,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static Vector<Complex> operator +(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.Add(rightSide);
         }
 
@@ -366,21 +360,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static Vector<Complex> operator -(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.Subtract(rightSide);
         }
 
@@ -476,21 +460,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static Complex operator *(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.DotProduct(rightSide);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Complex/SparseVector.cs b/src/Numerics/LinearAlgebra/Complex/SparseVector.cs
index 2c532191..0da08e7b 100644
--- a/src/Numerics/LinearAlgebra/Complex/SparseVector.cs
+++ b/src/Numerics/LinearAlgebra/Complex/SparseVector.cs
@@ -378,21 +378,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static SparseVector operator +(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (SparseVector)leftSide.Add(rightSide);
         }
 
@@ -525,21 +515,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static SparseVector operator -(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (SparseVector)leftSide.Subtract(rightSide);
         }
 
@@ -674,21 +654,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static Complex operator *(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.DotProduct(rightSide);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Complex/Vector.cs b/src/Numerics/LinearAlgebra/Complex/Vector.cs
index ac4b07c2..7e585b1b 100644
--- a/src/Numerics/LinearAlgebra/Complex/Vector.cs
+++ b/src/Numerics/LinearAlgebra/Complex/Vector.cs
@@ -3,7 +3,9 @@
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
-// Copyright (c) 2009-2010 Math.NET
+//
+// Copyright (c) 2009-2013 Math.NET
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -12,8 +14,10 @@
 // copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the Software.
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -28,9 +32,7 @@ namespace MathNet.Numerics.LinearAlgebra.Complex
 {
     using System;
     using System.Numerics;
-    using Distributions;
     using Generic;
-    using Properties;
     using Storage;
     using Threading;
 
diff --git a/src/Numerics/LinearAlgebra/Complex32/DenseVector.cs b/src/Numerics/LinearAlgebra/Complex32/DenseVector.cs
index 86719122..605169c0 100644
--- a/src/Numerics/LinearAlgebra/Complex32/DenseVector.cs
+++ b/src/Numerics/LinearAlgebra/Complex32/DenseVector.cs
@@ -3,7 +3,9 @@
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
-// Copyright (c) 2009-2010 Math.NET
+//
+// Copyright (c) 2009-2013 Math.NET
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -12,8 +14,10 @@
 // copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the Software.
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -281,21 +285,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static DenseVector operator +(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (DenseVector)leftSide.Add(rightSide);
         }
 
@@ -366,21 +360,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static DenseVector operator -(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (DenseVector)leftSide.Subtract(rightSide);
         }
 
@@ -476,21 +460,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static Complex32 operator *(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.DotProduct(rightSide);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Complex32/SparseVector.cs b/src/Numerics/LinearAlgebra/Complex32/SparseVector.cs
index 203d5ff6..5dacdd32 100644
--- a/src/Numerics/LinearAlgebra/Complex32/SparseVector.cs
+++ b/src/Numerics/LinearAlgebra/Complex32/SparseVector.cs
@@ -378,21 +378,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static SparseVector operator +(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (SparseVector)leftSide.Add(rightSide);
         }
 
@@ -525,21 +515,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static SparseVector operator -(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (SparseVector)leftSide.Subtract(rightSide);
         }
 
@@ -674,21 +654,11 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static Complex32 operator *(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.DotProduct(rightSide);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Complex32/Vector.cs b/src/Numerics/LinearAlgebra/Complex32/Vector.cs
index 64133ede..3c2dcc3f 100644
--- a/src/Numerics/LinearAlgebra/Complex32/Vector.cs
+++ b/src/Numerics/LinearAlgebra/Complex32/Vector.cs
@@ -3,7 +3,9 @@
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
-// Copyright (c) 2009-2010 Math.NET
+//
+// Copyright (c) 2009-2013 Math.NET
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -12,8 +14,10 @@
 // copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the Software.
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -27,9 +31,7 @@
 namespace MathNet.Numerics.LinearAlgebra.Complex32
 {
     using System;
-    using Distributions;
     using Generic;
-    using Properties;
     using Storage;
     using Threading;
     using Complex32 = Numerics.Complex32;
diff --git a/src/Numerics/LinearAlgebra/Double/DenseVector.cs b/src/Numerics/LinearAlgebra/Double/DenseVector.cs
index 98d324bc..18a89561 100644
--- a/src/Numerics/LinearAlgebra/Double/DenseVector.cs
+++ b/src/Numerics/LinearAlgebra/Double/DenseVector.cs
@@ -3,7 +3,9 @@
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
-// Copyright (c) 2009-2010 Math.NET
+//
+// Copyright (c) 2009-2013 Math.NET
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -12,8 +14,10 @@
 // copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the Software.
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -366,21 +370,11 @@ namespace MathNet.Numerics.LinearAlgebra.Double
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static DenseVector operator -(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (DenseVector)leftSide.Subtract(rightSide);
         }
 
@@ -476,21 +470,11 @@ namespace MathNet.Numerics.LinearAlgebra.Double
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static double operator *(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.DotProduct(rightSide);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Double/SparseVector.cs b/src/Numerics/LinearAlgebra/Double/SparseVector.cs
index 90169a7b..fea9f87b 100644
--- a/src/Numerics/LinearAlgebra/Double/SparseVector.cs
+++ b/src/Numerics/LinearAlgebra/Double/SparseVector.cs
@@ -346,21 +346,11 @@ namespace MathNet.Numerics.LinearAlgebra.Double
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static SparseVector operator +(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (SparseVector)leftSide.Add(rightSide);
         }
 
@@ -493,21 +483,11 @@ namespace MathNet.Numerics.LinearAlgebra.Double
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static SparseVector operator -(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (SparseVector)leftSide.Subtract(rightSide);
         }
 
@@ -642,21 +622,11 @@ namespace MathNet.Numerics.LinearAlgebra.Double
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static double operator *(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.DotProduct(rightSide);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Double/Vector.cs b/src/Numerics/LinearAlgebra/Double/Vector.cs
index fe04fa58..211ae5b6 100644
--- a/src/Numerics/LinearAlgebra/Double/Vector.cs
+++ b/src/Numerics/LinearAlgebra/Double/Vector.cs
@@ -3,7 +3,9 @@
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
-// Copyright (c) 2009-2010 Math.NET
+//
+// Copyright (c) 2009-2013 Math.NET
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -12,8 +14,10 @@
 // copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the Software.
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -27,9 +31,7 @@
 namespace MathNet.Numerics.LinearAlgebra.Double
 {
     using System;
-    using Distributions;
     using Generic;
-    using Properties;
     using Storage;
     using Threading;
 
diff --git a/src/Numerics/LinearAlgebra/Single/DenseVector.cs b/src/Numerics/LinearAlgebra/Single/DenseVector.cs
index 82d65168..8789c17a 100644
--- a/src/Numerics/LinearAlgebra/Single/DenseVector.cs
+++ b/src/Numerics/LinearAlgebra/Single/DenseVector.cs
@@ -3,7 +3,9 @@
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
-// Copyright (c) 2009-2010 Math.NET
+//
+// Copyright (c) 2009-2013 Math.NET
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -12,8 +14,10 @@
 // copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the Software.
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -281,21 +285,11 @@ namespace MathNet.Numerics.LinearAlgebra.Single
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static DenseVector operator +(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (DenseVector)leftSide.Add(rightSide);
         }
 
@@ -366,21 +360,11 @@ namespace MathNet.Numerics.LinearAlgebra.Single
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static DenseVector operator -(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (DenseVector)leftSide.Subtract(rightSide);
         }
 
@@ -476,21 +460,11 @@ namespace MathNet.Numerics.LinearAlgebra.Single
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static float operator *(DenseVector leftSide, DenseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.DotProduct(rightSide);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Single/SparseVector.cs b/src/Numerics/LinearAlgebra/Single/SparseVector.cs
index 440d7e60..16a8fb2c 100644
--- a/src/Numerics/LinearAlgebra/Single/SparseVector.cs
+++ b/src/Numerics/LinearAlgebra/Single/SparseVector.cs
@@ -347,21 +347,11 @@ namespace MathNet.Numerics.LinearAlgebra.Single
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static SparseVector operator +(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (SparseVector)leftSide.Add(rightSide);
         }
 
@@ -494,21 +484,11 @@ namespace MathNet.Numerics.LinearAlgebra.Single
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static SparseVector operator -(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return (SparseVector)leftSide.Subtract(rightSide);
         }
 
@@ -643,21 +623,11 @@ namespace MathNet.Numerics.LinearAlgebra.Single
         /// <exception cref="ArgumentNullException">If <paramref name="leftSide"/> or <paramref name="rightSide"/> is <see langword="null" />.</exception>
         public static float operator *(SparseVector leftSide, SparseVector rightSide)
         {
-            if (rightSide == null)
-            {
-                throw new ArgumentNullException("rightSide");
-            }
-
             if (leftSide == null)
             {
                 throw new ArgumentNullException("leftSide");
             }
 
-            if (leftSide.Count != rightSide.Count)
-            {
-                throw new ArgumentException(Resources.ArgumentVectorsSameLength, "rightSide");
-            }
-
             return leftSide.DotProduct(rightSide);
         }
 
diff --git a/src/Numerics/LinearAlgebra/Single/Vector.cs b/src/Numerics/LinearAlgebra/Single/Vector.cs
index 3e5c4473..1f1e4679 100644
--- a/src/Numerics/LinearAlgebra/Single/Vector.cs
+++ b/src/Numerics/LinearAlgebra/Single/Vector.cs
@@ -3,7 +3,9 @@
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
 // http://mathnetnumerics.codeplex.com
-// Copyright (c) 2009-2010 Math.NET
+//
+// Copyright (c) 2009-2013 Math.NET
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -12,8 +14,10 @@
 // copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the Software.
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -27,9 +31,7 @@
 namespace MathNet.Numerics.LinearAlgebra.Single
 {
     using System;
-    using Distributions;
     using Generic;
-    using Properties;
     using Storage;
     using Threading;