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, …

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

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 $\\mathbb R - \\mathbb Q$?

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.

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 …

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. For example, the …

Nov 3, 2014 · Symbol for 'When ...' Ask Question Asked 11 years, 1 month ago Modified 11 years, 1 month ago

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

Aug 29, 2021 · Do we have the equivalent of the BTC/USD trading symbol in Thinkorswim?

Dec 14, 2022 · It looks like a variation on the right-facing Armenian eternity symbol "֍" The sign is an ancient Armenian national symbol often carved on khachkars and on walls of churches, symbolizing …