[Merged by Bors] - feat(field_theory/minpoly/basic): minpoly is unaffected by injective alg_homs
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eric-wieser
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May 17, 2023
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src/field_theory/minpoly/basic.lean
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| lemma minpoly_alg_hom (f : B →ₐ[A] B') (hf : function.injective f) (x : B) : | ||
| minpoly A (f x) = minpoly A x := | ||
| begin | ||
| rw [minpoly, minpoly], |
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Maybe there's a way to prove this without unfolding, but this was pretty easy anyway.
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minpoly is unaffected by injective alg_homsminpoly is unaffected by injective alg_homs
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