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Jun 27, 2017 at 16:00 comment added Thomas Rot And for the two-dimensional case it was probably Brouwer.
Jun 27, 2017 at 12:54 history edited Thomas Rot CC BY-SA 3.0
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Jun 27, 2017 at 12:52 comment added Thomas Rot @DmitriPavlov: Good question. I guess not, probably it was Hopf in "Abbildungsklassen $n$-dimensionaler Mannigfaltigkeiten".
Jun 27, 2017 at 11:19 comment added Dmitri Pavlov Was it really Pontryagin who was the first to compute π_n(S^n)?
Jun 26, 2017 at 23:10 vote accept Thomas Rot
Jun 26, 2017 at 22:43 answer added David Roberts timeline score: 24
Jun 26, 2017 at 22:38 answer added Igor Belegradek timeline score: 15
Jun 26, 2017 at 22:27 history edited David Roberts CC BY-SA 3.0
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Jun 26, 2017 at 22:21 history edited David Roberts CC BY-SA 3.0
Formatting; added MR link
Jun 26, 2017 at 19:30 history edited Thomas Rot CC BY-SA 3.0
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Jun 26, 2017 at 17:13 history asked Thomas Rot CC BY-SA 3.0