diff options
Diffstat (limited to 'mathcomp/ssreflect/path.v')
| -rw-r--r-- | mathcomp/ssreflect/path.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mathcomp/ssreflect/path.v b/mathcomp/ssreflect/path.v index 72c9719..fa66807 100644 --- a/mathcomp/ssreflect/path.v +++ b/mathcomp/ssreflect/path.v @@ -687,12 +687,12 @@ Proof. move=> e_p; have: x \in x :: p by apply: mem_head. elim: p x {1 3 5}x e_p => [|y2 p IHp] x y1. by rewrite mem_seq1 => _ /eqP->. -rewrite inE orbC /= => /andP[ey12 /IHp {IHp}IHp]. +rewrite inE orbC /= => /andP[ey12 {}/IHp IHp]. case: ifPn => [y2p_x _ | not_y2p_x /eqP def_x]. have [p' e_p' Up' p'p] := IHp _ y2p_x. by split=> // y /p'p; apply: predU1r. have [p' e_p' Up' p'p] := IHp y2 (mem_head y2 p). -have{p'p} p'p z: z \in y2 :: p' -> z \in y2 :: p. +have{} p'p z: z \in y2 :: p' -> z \in y2 :: p. by rewrite !inE; case: (z == y2) => // /p'p. rewrite -(last_cons y1) def_x; split=> //=; first by rewrite ey12. by rewrite (contra (p'p y1)) -?def_x. |