fix for lifting matrices over QQ#4248
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d-torrance merged 1 commit intoMacaulay2:developmentfrom May 4, 2026
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Fix for git issue #4235. Over QQ, and for polynomial quotient rings, the logic for denominators was not quite correct, this arises in trying to lift a matrix along another, over such a ring. This fixes that problem, and adds a test (or, several tests) to make sure. (try#2)