2 lines
70 B
Text
2 lines
70 B
Text
rewrite rules for eq
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#2 perm, nat.add ?M_1 ?M_2 ↦ nat.add ?M_2 ?M_1
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rewrite rules for eq
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#2 perm, nat.add ?M_1 ?M_2 ↦ nat.add ?M_2 ?M_1
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