c++ - How to compute basis of nullspace with Eigen library? -

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how compute basis of nullspace of matrix eigen library?

i tried find explicit function name compute null basis , also, workaround, find method computing rref of matrix(as we're able null basis rref).

but couldn't find relevant functions names.

i think there's must solution this, know not eigen library , eigen's code difficult me understand.

please suggest me solution problem.

you can basis of null space using eigen::fullpivlu::kernel() method:

fullpivlu<matrixxd> lu(a); matrixxd a_null_space = lu.kernel();

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