Where can I find the implementation of numerical methods for solving SLAE?

Question

Mathematics

Actually, subject.
In the thesis, this is one of the parts, and not the main one. And I do layout, js, etc.
Therefore, could you tell me where to find the Seidel method, the sweep method, Jacobi, etc., checked by you. Preferably in C#. Thanks in advance.

Answer 1

If it works for you on matlab, then I'll look for it. Search?

Answer 2

Did you pay attention to this thing?