PlanetMath: law of signs under multiplication in a ring

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See Also: ring

Other names:

$(-x)\cdot (-y)= x\cdot y$

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Cross-references: associativity, inverse, additive, ring with unity
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This is version 7 of law of signs under multiplication in a ring, born on 2004-03-09, modified 2006-03-10.
Object id is 5675, canonical name is XcdotYXcdotY.
Accessed 3599 times total.

Classification:

AMS MSC:	13-00 (Commutative rings and algebras :: General reference works )
	16-00 (Associative rings and algebras :: General reference works )
	20-00 (Group theory and generalizations :: General reference works )

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