Want to take part in these discussions? Sign in if you have an account, or apply for one below
Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.
I made a stub uniform convergence space, but I need to read the reference.
We now have motivation (made up by me) but not yet a definition.
Related edits to Cauchy space, Cauchy filter, and ultrafilter.
Now with a definition at uniform convergence space.
A mistake in the nonstandard stuff at Cauchy filter. Fixed.
Now probably everything that I'll write at uniform convergence space is pretty much there.
Nice! The idea of a “filter of filters” takes some wrapping my head around, though.
Yeah, I have to keep reminding myself that this isn't really more abstract than a Cauchy space, or go back to the example of a metric space, where a uniform filter may be assumed to be (a superset of the eventuality filter of the pairing of) a pair of sequences.
I changed the ad-hoc term “uniform filter” to “asymptotic filter”, although this is wrong. There must be some term for a pair of sequences such that , but what is it? I know “coterminal”, but this assumes that they converge; and “asymptotic” really means that (at least for positive-valued sequences), which is weaker.
Additively asymptotic?
I thought of ‘exponentially asymptotic’, since . But why doesn't it have its own term? It's a very natural notion.
Based on the answers (or lack thereof) at my MathOverflow question, I’m going to stick with ‘asymptotic’, but I added to the terminological warning.
@Toby: as support for that terminology look at asymptotic C-star-homomorphism. This notion, due to Connes and Higson, corresponds in the (non-commutative) C*-algebra setting to strong shape morphisms in the corresponding topological one.
1 to 13 of 13