
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 …
What exactly is "approximation"? - Mathematics Stack Exchange
Jan 31, 2013 · One can, for example, approximate continuous functions with polynomial functions, in which case the idea is to keep the area between the original function and the approximating …
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 …
Approximate functional equation for the Riemann zeta function
Dec 12, 2018 · The Riemann zeta function admits the approximation $$\zeta (s)\sim\sum_ {n=1}^N\frac {1} {n^s}+\gamma (1-s)\sum_ {n=1}^M\frac {1} {n^ {1-s}},$$ in the critical strip, …
notation - Different use of approximate equality symbols
Apr 12, 2016 · I have been wondering for a long time whether there is a unequivocal way to define and use the symbols commonly adopted for an approximate equality between two quantities. I …
How to approximate $\\sin x$ without using trigonometry tables?
An Opening Note : First of all, I want to make this very clear that by the phrase "without using trigonometry tables", I mean without using them to find $\\sin$ values of the "non-standard …
Is there a "greater than about" symbol? - Mathematics Stack …
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. …
Approximation of square roots - Mathematics Stack Exchange
Oct 2, 2018 · Recently, I've seen a YouTube video where they approximate square roots real quick. They use this approximation : $$\\sqrt{x} \\approx \\lfloor \\sqrt{x} \\rfloor+ ...
How is the value of $\pi$ ( Pi ) actually calculated?
Using a random generator to approximate $\pi$ is both very inefficient, and very hard (since you must put a lot of effort into writing a very good random number generator). I cannot see why …
exponential function - Feynman's Trick for Approximating $e^x ...
Jul 7, 2017 · And he could approximate small values by performing some mental math to get an accurate approximation to three decimal places. For example, approximating e3.3 e 3.3, we …