"Categories of rings" moved to main #4767
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* ~lssvacl moved up (before ~lssvsubcl) - in set.mm as well as iset.mm * comment of ~df-lss enhanced (analogous to iset.mm)
* theorems ~idfusubc0, +idfusubc, ~inclfusubc about subcategories moved from AV's mathbox to main * theorem ~nrhmzr about zero/nonzero rings moved from AV's mathbox to main * Subsubsection "The category of non-unital rings" moved from AV's mathbox to main (without ALT-definitions and related theorems) * Subsubsection "The category of (unital) rings" moved from AV's mathbox to main (without ALT-definitions and related theorems) *subsubsection "Subcategories of the category of rings" moved from AV's mathbox to main (without theorems for ALT-definitions) * more theorems about ring categories theorems moved from AV's mathbox to main ~drhmsubc, ~drngcat, ~fldcat, ~fldc, ~fldhmsubc, ~irinitoringc, ~nzerooringczr
theorems in AV's mathbox about subcategories for alternate definitions rearranged
tirix
approved these changes
Apr 15, 2025
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This is the final PR to finish issue #1389. We than have definitions and theorems for unital as well as non-unital rings, and the corresponding categories in main.
In Detail:
Minor modifications for linear subspaces