mathnet/mathnet-numerics — pull request #57 by vicpara (2012-11-16 11:05:28+00:00)
Title: SparseMatrix is now Serializable

MathNet.Numerics.LinearAlgebra.Storage.MatrixStorage and
MathNet.Numerics.LinearAlgebra.Storage.SparseCompressedRowMatrixStorage
have been marked as Serializable.

Even though SparseMatrix was marked as Serializable it didn't work because some member variables were not marked as well.