Let $A$ be in $GL(2,n)$ means $n$ by $n$ invertible matrix with entries in $Z_2$, If $A$ has eigenvalue $1$, Is there something we can say about structure of matrix $A$ or about $\dim(\ker(I-A))$ or anything else about this matrix?
2026-04-03 19:00:38.1775242838
eigenspace corresponding to eigenvalue 1?
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