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feat(topology): prove a space is preconnected iff every continuous ma… #16974

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feat(topology): prove a space is preconnected iff every continuous ma… #16974

wants to merge 1 commit into from

Commits on Oct 14, 2022

  1. feat(topology): prove a space is preconnected iff every continuous ma… 

    …p to a discrete space is constant

this useful characterisation of connectedness was missing from mathlib.
    @dagurtomas
    dagurtomas committed Oct 14, 2022
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