lean2/tests/lean/show1.lean.expected.out
Leonardo de Moura 68d9bef860 refactor(library): add 'eq' and 'ne' namespaces
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-09-04 18:41:06 -07:00

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show eq a c, from eq.trans H1 H2 : eq a c
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have e1 [fact] : eq a b, from H1,
have e2 : eq a c, from eq.trans e1 H2,
have e3 : eq c a, from eq.symm e2,
have e4 [fact] : eq b a, from eq.symm e1,
show eq b c, from eq.trans (eq.symm e1) e2 :
eq b c