[Merged by Bors] - feat: Fintype instance for an extended family of linearly independent vectors
#17541
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PR summary 4ad9126799Import changes for modified filesNo significant changes to the import graph Import changes for all files
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…nt vectors (#17541) Given a family of linearly independent vectors $s \subset t$, one can get a linearly independent family which spans the submodule spanned by $t$ containing $s$. We add a `Fintype` instance for this family in the case where the span of $t$ is finite so as to be able to write sums over this type when manipulating bases indexed by it (typically `Basis.extend` and similar).
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Fintype instance for an extended family of linearly independent vectorsFintype instance for an extended family of linearly independent vectors
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Given a family of linearly independent vectors$s \subset t$ , one can get a linearly independent family which spans the submodule spanned by $t$ containing $s$ . We add a $t$ is finite so as to be able to write sums over this type when manipulating bases indexed by it (typically
Fintypeinstance for this family in the case where the span ofBasis.extendand similar).