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SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for Alexander van der Vekens
Graph theory (extension)
Isomorphic graphs
cisomgr
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df-grisom
Metamath Proof Explorer
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Structured
Syntax definition
cisomgr
Description:
Extend class notation to include the isomorphy relation for graphs.
Ref
Expression
Assertion
cisomgr
class
IsomGr