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. …

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 …

Sep 15, 2022 · Can anyone tell me what this symbol is indicating? Add a Comment Sort by: Search Comments

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.

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 …

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 …

The Unicode name of $\subsetneqq$ is purely descriptive of what the symbol looks like: It is a “subset of” symbol ($\subset$) above a “not equal” symbol ($\neq$); hence the name is …

Nov 27, 2022 · I just joined and need help understanding what all the different profile colors and symbols on the map. Is there a list of meanings on the site?

Dec 13, 2016 · An unsophisticated question from a neophyte: Given the numbers: $1,2,3,4,5$ What is the symbol for the range of the numbers? i.e. the lowest-highest number in the set. …

I just came across this annotation in my school's maths compendium: The compendium is very brief and doesn't explain what this means.