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mem_head_or_behead #1

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vblot opened this issue Jul 26, 2019 · 0 comments

vblot commented Jul 26, 2019

internship2019/src/seq2.v

Line 4 in 17e55db

    
           Lemma mem_head_or_behead {T : eqType} : forall (x : T) h l, x \in h::l = (x == h) || (x \in l).

ce lemme est dans ssreflect.seq et s'appelle in_cons

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