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The theory of lattices in the sense of order theory. For the number-theoretic notion, use the tag "lattices" instead.

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Reference request: Compact metrizable semilattices with small connected semilattices are abs...

Let $X$ be a compact metrizable topological semilattice with a neighbourhood base of sub-semilattices that are path-connected. I need a reference for a proof that $X$ is an absolute retract. Here is w …
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