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Aug 14, 2022 at 20:27 comment added Danny Ruberman I'm not sure what the confusion is. The text below the picture identifies everyone in the picture. The "(hidden)" in the caption refers not to the row being hidden, but to Ric Litherland in the third row who is partially hidden. Dennis Barden is in the second row in front of me.
Aug 14, 2022 at 2:40 comment added C.F.G @DannyRuberman, You mean hidden row? there is no one in front of young-Danny in hidden row!
Aug 13, 2022 at 20:18 comment added Danny Ruberman @C.F.G Just so! There's a key in the text below the photo.
Aug 13, 2022 at 9:38 comment added C.F.G @DannyRuberman Dennis Barden?
Oct 19, 2020 at 8:35 comment added Bruno Martelli the photo is fantastic
Oct 15, 2020 at 20:12 comment added Stefan Friedl Haha, very good. The photo is one of great classics of geometric topology.
Oct 14, 2020 at 21:01 comment added Danny Ruberman @StefanFriedl Not such a hard find. Look who is standing in front of me in this photo: msp.org/gtm/1999/02/photos/photo02.html
Oct 14, 2020 at 20:56 comment added Stefan Friedl Thanks. Great find. Of course I meant "closed". It's a metatheorem in topology that when it comes to manifolds one always forgets at least one adjective!
Oct 14, 2020 at 20:55 vote accept Stefan Friedl
Oct 14, 2020 at 1:21 history answered Danny Ruberman CC BY-SA 4.0