Find a Matrix A on the ring of integers modulo 3 so that KerA=ImB.
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B={{1,1,1},{0,1,2},{2,1,0},{0,2,2}} I understand that each vector from then span of column vectors of B is a solution for Ax = o and that matrix A should have four columns. However I don't know how many rows it should have and how to find it.
linear-algebra matrices modular-arithmetic
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asked Nov 17 at 10:02
Oleksandr
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