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Hao Chen

PostDoc at the Georg-August-University Göttingen. Previously discrete geometer, now differential geometer.

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32 When is an erratum necessary? Nov 20 '15
30 Generalizations of the Four-Color theorem Dec 7 '14
15 Is {6,3,7} an 'ultrahyperbolic' Coxeter group? Jun 9 '14
14 How many unit balls can be put into a unit cube? Feb 19 '13
12 Chromatic number of graphs of tangent closed balls Feb 6 '15
11 Koebe–Andreev–Thurston theorem - where can I find a proof? Nov 23 '14
10 Coloring of the plane Oct 8 '14
10 What can we learn from the newly discovered monohedral convex pentagonal tiling? Aug 24 '15
10 What is known about the chromatic number for minimum-distance graphs in higher dimensions? Oct 20 '14
9 Neighborly family of coins Mar 2 '15
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