Difference between "≈", "≃", and "≅" - Mathematics Stack Exchange
In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical Operators B...
What is the approximate identity? - Mathematics Stack Exchange
Feb 25, 2017 · An approximate identity (in the sense that you've described) is a sequence of operators, usually derived from some "nice" class, that converge to the identity operator in the sense that you …
Approximate functional equation for the Riemann zeta function
Dec 12, 2018 · Approximate functional equation for the Riemann zeta function Ask Question Asked 7 years, 1 month ago Modified 7 years, 1 month ago
How to derive a function to approximate $\\sqrt{3}$?
Basically, to approximate the location of a root of a function, we approximate the function locally by its tangent, find the tangents root instead, and that value is a decent approximation for the location of …
Approximating square roots using binomial expansion.
We want to (manually) approximate $\sqrt {2}$ by using the first few terms of the binomial series expansion of \begin {align*} \sqrt {1-2x}&= \sum_ {n=0}^\infty \binom {\frac {1} {2}} {n} ( …
spectral theory - Characterising the approximate point spectrum of a ...
Mar 9, 2025 · @DeanMiller: I think it helps, but it is a bit confusing as the OP uses a definition of approximate spectrum that differs from Wikipedia's but which according to the addendum of the …
real analysis - How to approximate $e^ {-x}$ when $x$ is large ...
Jan 1, 2023 · How to approximate $e^ {-x}$ when $x$ is large Ask Question Asked 3 years, 1 month ago Modified 3 years, 1 month ago
Approximating the error function erf by analytical functions
Aug 15, 2016 · My question is if I can find, or if there are known, substitutions for this non-elementary function in terms of elementary ones. In the sense above, i.e. the approximation is …
approximate square roots of fractions with rationals
Apr 26, 2024 · approximate square roots of fractions with rationals Ask Question Asked 1 year, 9 months ago Modified 1 year, 9 months ago
Derive an $O(h^4)$ five point formula to approximate $f'(x_0)$ that ...
Nov 25, 2017 · Here's my answer to my own question, that I came to after help tips from here and retrying. This doesn't match the two other answers given, so if it's wrong please ...