feat(data/polynomial/reverse.lean): show trailing_coeff is a multiplicative homomorphism #4707
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… one is a C_mul_X_pow
…oefficietns. Prove that reverse is a multiplicative monoid homomorphism
… poly-reverse pulling in order to create a PR with reverse
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Good catch! The `N` was indeed a typo for `i`! Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
I did not realize that it was a possibility not to use \lambda! Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
This happens quite a few times: I will replace the remaining instances! Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>
…b into poly-reverse
removed to empty lines
removed a "cyclic" import
replaced ```C_mul_X_pow_of_card_support_le_one``` with the already existing ```C_mul_X_pow_eq_self```
…b into poly-reverse
…b into poly-reverse2
cleared up some module dependencies
support of cardinality at most one
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I closed this pull request since the main aim of it was to prove that |
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use the
reflectfunction.prove lemmas on
trailing_degree.add a lemma on monotone non-increasing to show that
trailing_coeffandleading_coeffare exchanged underreflect.I plan to merge the contents of the file
to_finset_lattice_max_min.leanindata.finset.lattice.lean section max_min. The file containsdef monandlemma monotone_max'_min'. Feel free to suggest a better home for its content!