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Talk:Thurston norm

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First draft

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As it stands this is incomplete. Stuff I'd like to add:

jraimbau (talk) 10:00, 8 July 2016 (UTC)[reply]

Euler characteristic

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Isn't the Euler characteristic of a sphere 2? Why is it 0 in this case? Or do I miss something? oh wait, ... Wilson868 (talk) 10:13, 8 June 2019 (UTC)[reply]