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Algebra.adjoin_nonUnitalSubalgebra
Modification history
2024-05-15 06:18
Mathlib/Algebra/Algebra/Subalgebra/Unitization.lean
feat: `Algebra.adjoin R s` is `span R {1} ⊔ s.toSubmodule` (#12889) …
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Algebra.adjoin_nonUnitalSubalgebra
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