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Theorem quiver.sum_arrow

Modification history

2021-04-20 07:56
src/combinatorics/quiver.lean
chore(combinatorics/quiver): make quiver a class (#7150)
Deleted quiver.sum_arrowView on Github →
2021-03-20 16:28
src/combinatorics/quiver.lean
feat(combinatorics/quiver): define quivers (#6680) …
Added quiver.sum_arrowView on Github →