feat(CategoryTheory/Abelian): construction of reduced left resolutions#22547
feat(CategoryTheory/Abelian): construction of reduced left resolutions#22547
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PR summary 8a246bcb1cImport changes for modified filesNo significant changes to the import graph Import changes for all files
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| Current number | Change | Type |
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| 516 | -1 | porting notes |
| 757 | 1 | erw |
Current commit bf055acb48
Reference commit 8a246bcb1c
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./scripts/technical-debt-metrics.sh pr_summary
- The
relativevalue is the weighted sum of the differences with weight given by the inverse of the current value of the statistic. - The
absolutevalue is therelativevalue divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).
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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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This PR has been migrated to a fork-based workflow: #30812 |
The standard functorial free resolution of a
R-moduleMdoes not directly extend to free resolutions of (bounded above) complexes because the freeR-module functor does preserve zero morphisms. In this PR, we provide a general construction which takes functorial left resolutions and modify them by considering a suitable direct factor so that it preserves zero morphisms.