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[Merged by Bors] - feat(algebra/group_ring_action): add mul_semiring_action.comp_hom
#16850
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`K →+* N` induce a multiplicative action of `K` on `B`.
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mul_semiring_action.comp_hom
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Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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Lint and build are failing. Could you please fix those? |
Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
…community/mathlib into mul_semiring_action.comp_hom some fixes
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Thank you. I think these are fixed now - Is there anything else I should do? |
fpvandoorn
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LGTM Please merge once CI shows a green checkmark bors d+ |
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Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>
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Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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OK, thank you. Please let me know if there is anything else |
eric-wieser
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Oct 15, 2022
…community/mathlib into mul_semiring_action.comp_hom added a section
eric-wieser
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Also, can you update the PR description? It's no longer accurate |
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…16850) A multiplicative action of a monoid `M` on a semiring `R` and a monoid homomorphism `N →* M` induce a multiplicative action of a monoid `N` on `R`. I need this for my study of the decomposition and inertia groups Co-authored-by: mkaratarakis <40603357+mkaratarakis@users.noreply.github.com>
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Pull request successfully merged into master. Build succeeded: |
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A multiplicative action of a monoid
Mon a semiringRand a monoid homomorphismN →* Minduce a multiplicative action of a monoidNonR.I need this for my study of the decomposition and inertia groups