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Oct 29, 2017 at 10:14 vote accept C.F.G
Oct 29, 2017 at 10:14 vote accept C.F.G
Oct 29, 2017 at 10:14
Oct 29, 2017 at 4:10 comment added Haggai Nuchi @j.c. found it. see edit 2 above.
Oct 29, 2017 at 4:09 history edited Haggai Nuchi CC BY-SA 3.0
Found reference
Oct 29, 2017 at 3:16 comment added Haggai Nuchi @j.c. I wasn't quite right, see my edit. I'll try to look up the source of my (erroneous) idea but who knows what will turn up.
Oct 29, 2017 at 3:14 history edited Haggai Nuchi CC BY-SA 3.0
Corrected a wrong statement.
Oct 28, 2017 at 20:38 comment added j.c. I'd be curious to see a proof of the fact that the preimage of the double points has nontrivial homology if you can dig up a reference or recall the idea.
Oct 28, 2017 at 18:31 history answered Haggai Nuchi CC BY-SA 3.0