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Re: Group Property
Posted:
Aug 26, 2014 5:32 AM


William Elliot wrote: > phi is a group invariant when phi is preserved by isomorphism, > for all G,H, (phi(G), G isomorphic H implies phi(H). > > phi is a group property when it's defined only by > set theory
What in mathematics isn't definable in set theory? (Like before, really.)
> and a binary group operator. > > Are group invariants and group properties the same? >
 [Dancing is] a perpendicular expression of a horizontal desire. G.B. Shaw quoted in /New Statesman/, 23 March 1962



