[Merged by Bors] - feat(linear_algebra/char_poly/coeff,*): prerequisites for friendship theorem #3953
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…prover-community/mathlib into freek_83_friendship_theorem
rwbarton
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awainverse
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Co-authored-by: Bryan Gin-ge Chen <bryangingechen@gmail.com>
Co-authored-by: Bryan Gin-ge Chen <bryangingechen@gmail.com>
jcommelin
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| variables {p : ℕ} [fact p.prime] | ||
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| lemma finite_field.char_poly_pow_card {K : Type*} [field K] [fintype K] (M : matrix n n K) : |
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…theorem (#3953) adds several assorted lemmas about matrices and `zmod p` proves that if `M` is a square matrix with entries in `zmod p`, then `tr M^p = tr M`, needed for friendship theorem Co-authored-by: Aaron Anderson <awainverse@gmail.com>
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…theorem (#3953) adds several assorted lemmas about matrices and `zmod p` proves that if `M` is a square matrix with entries in `zmod p`, then `tr M^p = tr M`, needed for friendship theorem Co-authored-by: Aaron Anderson <awainverse@gmail.com>
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…theorem (#3953) adds several assorted lemmas about matrices and `zmod p` proves that if `M` is a square matrix with entries in `zmod p`, then `tr M^p = tr M`, needed for friendship theorem Co-authored-by: Aaron Anderson <awainverse@gmail.com>
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adds several assorted lemmas about matrices and
zmod pproves that if
Mis a square matrix with entries inzmod p, thentr M^p = tr M, needed for friendship theorem