Jun 23, 2015 · $\\mathbb Q$ is used to represent rational numbers. $\\mathbb R$ is used to represent reals. Is there a symbol or convention that represents irrationals. Possibly $\\mathbb R - \\mathbb Q$?

The symbol ≅ is used for isomorphism of objects of a category, and in particular for isomorphism of categories (which are objects of CAT). The symbol ≃ is used for equivalence of categories. At least, …

Jun 25, 2014 · I have started seeing the "∈" symbol in math. What exactly does it mean? I have tried googling it but google takes the symbol out of the search.

Nov 13, 2020 · To introduce a logic premise, normally people use the words "if" or "iff" (if and only if). Is there a mathematical symbol with the same meaning?

Sep 3, 2015 · How to type the § symbol I just wanted to help out some fellow 1Ls writing briefs or taking notes by showing how to quickly type the section symbol. If you are using windows, § can be made …

May 1, 2023 · I expect that there are dozens or even hundreds of different ways that authors, teachers, and more have written the phrase "such that" symbolically. I remember one of my teachers using …

Aug 31, 2019 · Either \propto or \varpropto seems to give the correct symbol. TeX often uses "var" to indicate a variation of a symbol (for example \epsilon $\epsilon$ vs \varepsilon $\varepsilon$; \theta …

There is a common thread running through many of the mysteries and hints in the series—the mysterious symbol, (alleged) astronomical symbols, cannibalism, and the sign of the bird and water …

18 $$:=$$ is the commonest symbol to denote "is equal by definition." Note that $$\equiv$$ is used to denote an algebraic identity: this means that the equation is true for all permitted values of its …

Oct 18, 2016 · In set theory \mid or : is often used but I haven't really seen any logical symbol used for "such that" in other situations. But now that I think of it there is the \ni symbol used as "such that" in …