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Results tagged with linear-algebra
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user 104937
Questions about the properties of vector spaces and linear transformations, including linear systems in general.
11
votes
Jacobi's equality between complementary minors of inverse matrices
Here is a short proof inspired by darij grinberg's answer and not using Schur complements (in particular, no invertibility of sub-matrices or continuity assumptions are needed).
WLOG let $I=J=[k]$. L …
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