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SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for Zhi Wang
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Opposite functors
coppf
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df-oppf
Metamath Proof Explorer
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Syntax definition
coppf
Description:
Extend class notation with the operation generating opposite functors.
Ref
Expression
Assertion
coppf
Could not format assertion : No typesetting found for class oppFunc with typecode class