17 lines
304 B
Text
17 lines
304 B
Text
new_frontend
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theorem tst1 (x y z : Nat) : y = z → x = x → x = y → x = z :=
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by {
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intros h1 h2 h3;
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revert h2;
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intro h2;
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exact Eq.trans h3 h1
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}
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theorem tst2 (x y z : Nat) : y = z → x = x → x = y → x = z :=
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by {
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intros h1 h2 h3;
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revert y;
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intros y hb ha;
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exact Eq.trans ha hb
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}
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