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Theorem surreal.zero_add

Modification history

2021-04-22 10:34
src/set_theory/surreal.lean
feat(set_theory/surreal): add ordered_add_comm_group instance for surreal numbers (#7270) …
Deleted surreal.zero_addView on Github →
2021-04-18 14:42
src/set_theory/surreal.lean
feat(set_theory/surreal): add add_monoid instance (#7228) …
Added surreal.zero_addView on Github →