Approximate units are used to verify that two-sided closed ideals of C$^\ast$-algebras are C$^\ast$-algebras themselves. Thus quotients of C$^\ast$-algebras are C$^\ast$-algebras as …

$\begingroup$ @Lucian I always took for granted that the "approximately" qualifier acted idempotently, so while we can distinguish between 'exact equality' and 'approximate equality', …

I need to write a function for $\\sin(x)$ using Padé approximation. I found here a formula, but I don't know how to achive this. Thanks in advance.

To approximate something is simply to represent it with something else that is good enough for your purpose. Numbers are not the only things that can be approximated. One can, for …

Jan 18, 2015 · I'm trying to approximate coth (x) coth (x) around x = 0 x = 0, up to say, third order in x x. Now obviously a simple taylor expansion doesn't work, as it diverges around x = 0 x = 0. …

Aug 12, 2015 · To indicate approximate equality, one can use ≃, ≅, ~, ♎, or ≒. I need to indicate an approximate inequality. Specifically, I know A is greater than a quantity of approximately B. …

Jul 7, 2017 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …

I suggest the approach by Robert Israel. I have recently done something similar to approximate this function, so here are my two cents. I was actually looking for an approximation of the …

Aug 16, 2017 · I might approximate using the following ~1k. 1k is not definite number but it's more or less very close. Is this the correct way of using ~? I noticed there are more than one …

I want to approximate a curve by some known points on the curve. I can choose these point. My curve is shown as below: I have to use such a equation: f(x) = a1x^1 + a2x^2 + a3x^3 + a4x^4 …