public void inverse()
{
block(OriginA, DiagRowCount);
//ParallelInverseOfSymmetric2 pppp = new ParallelInverseOfSymmetric2(SymmetricMatrix);
//var aa = pppp.invA.Multiply(SymmetricMatrix);
//invA = uniteBlockOfSymmetric(DiagonalMatrix, pppp.invA);
DiagonalMatrix = DiagonalMatrix.Inverse();
invA = uniteBlockOfSymmetric(DiagonalMatrix, SymmetricMatrix.Inverse());
//var sss = OriginA.Multiply(invA);
}
