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2 votes
3 answers
1k views

Concrete works by Alexandre Grothendieck, other than Dessin d'Enfants?

For me "Dessin d'Enfants" by Alexandre Grothendieck is the more concrete research work he has done. I would like to know if there are others. When he was teaching at Montpellier University (...
Al-Amrani's user avatar
1 vote
1 answer
173 views

Who introduced the concept of beyond planar graphs?

The concept of planar graphs seems to be standard (I'm also not sure who first used this term), and recently, beyond planar graphs attract a lot of interest in the field of graph drawing. I know that ...
Licheng Zhang's user avatar