Approximate Homomorphisms

which ``almost everywhere'' looks like an ultrafilter has to be close to some fixed ultrafilter.

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Received: August 20, 1997

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Farah, I. Approximate Homomorphisms. Combinatorica 18, 335–348 (1998). https://doi.org/10.1007/PL00009826

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  • AMS Subject Classification (1991) Classes:  05D99, 06E30; 28A35, 28A60