9 lines
338 B
Text
9 lines
338 B
Text
have e1 [visible] : eq a b, from H1,
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have e2 : eq a c, from trans e1 H2,
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have e3 : eq c a, from symm e2,
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have e4 [visible] : eq b a, from symm e1,
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have e5 : eq b c, from trans e4 e2,
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have e6 : eq a a, from
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trans H1 (trans H2 (trans (symm H2) (trans (symm H1) (trans H1 (trans H2 (trans (symm H2) (symm H1))))))),
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trans e3 e2 :
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eq c c
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