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Oct 24, 2018 at 11:20 vote accept Dominic van der Zypen
Oct 24, 2018 at 9:40 comment added KP Hart I was wrong: the Niemytzki plane does offer an easy solution.
Oct 24, 2018 at 9:11 history edited KP Hart CC BY-SA 4.0
Added a `real' counterexample.
Oct 24, 2018 at 8:40 comment added KP Hart That's quite likely; but none of the `standard' examples seem to offer an easy solution.
Oct 24, 2018 at 8:34 comment added Dominic van der Zypen Thanks for your answer @kphart! I'll wait a short time before accepting it - maybe an example that doesn't use (CH) can be found
Oct 24, 2018 at 8:16 history answered KP Hart CC BY-SA 4.0