Mar 5, 2011 · It's curious --and unfortunate-- that the symbol for emphasis became the symbol for negation. Granted, ASCII isn't the richest glyph set, and coders needed something, but why settle on …

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, …

Suppose (E, ≤) and (F, ≼) are isomorphic well-orderings. Then there exists a unique isomorphism for (E, ≤) to (F, ≼). I've been scouring the internet for what this symbol means. Someone said it means …

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

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?

What's the most used symbol for "defined to be equal to", at least in your experience (and I'm sure there are a lot of experienced people here)? Also, which one do you think is the "the most right" of them, in …

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

Possible Duplicate: What is the purpose of the ∓ ∓ symbol in mathematical usage? Just as the title explains. I've seen my professor actually differentiating between those two. Do they not mean the …

Jan 18, 2021 · Why is this downvoted? This is an accurate example of a text using a symbol for dependence, exactly what the questioner wanted! Came here because I'm reading it and looking for …

Feb 10, 2013 · Title says it all (I think). I'm betting it's something to do with Standard Integrals though. What is this symbol "$\\int$" called?