[Merged by Bors] - feat: Port/Topology.Algebra.Semigroup #2080
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Mathbin -> Mathlib fix certain import statements move "by" to end of line add import to Mathlib.lean
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| # Idempotents in topological semigroups | ||
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| This file provides a sufficient condition for a semigroup `M` to contain an idempotent (i.e. an | ||
| element `m` such that `m * m = m `), namely that `M` is a nonempty compact Hausdorff space where |
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| element `m` such that `m * m = m `), namely that `M` is a nonempty compact Hausdorff space where | |
| element `m` such that `m * m = m`), namely that `M` is a nonempty compact Hausdorff space where |
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port of topology.algebra.semigroup Co-authored-by: Moritz Doll <moritz.doll@googlemail.com>
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port of topology.algebra.semigroup Co-authored-by: Moritz Doll <moritz.doll@googlemail.com>
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port of topology.algebra.semigroup