lean2/tests/lean/run/goal.lean
Leonardo de Moura e51c4ad2e9 feat(frontends/lean): rename 'using' command to 'open'
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-09-03 16:00:38 -07:00

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import logic
open tactic
theorem T {a b c d : Prop} (H : a) (H : b) (H : c) (H : d) : a
:= by state; assumption