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SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for Alexander van der Vekens
Magmas and internal binary operations (alternate approach)
Alternative definitions for magmas and semigroups
ccsgrp2
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Structured
Syntax definition
ccsgrp2
Description:
Extend class notation with class of all commutative semigroups.
Ref
Expression
Assertion
ccsgrp2
class CSGrpALT