© | Dror Bar-Natan: Academic Pensieve: Blackboard Shots: Costello:
180312-204828: Associators and tetrahedra.
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Costello-{ hide text
  180312-204829: Associators and tetrahedra (2).
  180312-204828: Associators and tetrahedra.
}
Notes for BBS/Costello-180312-204828.jpg:    [edit]