2015-11-30 11:19:08 -07:00
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constant subt : nat → nat → Prop
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lemma subt_trans [forward] {a b c : nat} : subt a b → subt b c → subt a c :=
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sorry
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2015-12-06 15:01:49 -08:00
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set_option blast.strategy "ematch"
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2015-11-30 11:19:08 -07:00
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example (a b c d : nat) : subt a b → subt b c → subt c d → subt a d :=
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by blast
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