Mathlib Changelog
v3
Changelog
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Mathlib v3 is deprecated.
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Commit
2020-11-02 17:17
6587e840
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feat(algebra/algebra/subalgebra): subalgebras, when seen as submodules, are idempotent (
#4854
)
Estimated changes
Modified
src/algebra/algebra/subalgebra.lean
added
theorem
subalgebra.mul_self