notation - What does := mean? - Mathematics Stack Exchange
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 …
Difference between "≈", "≃", and "≅" - Mathematics Stack Exchange
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. …
notation - what does ≼ or ≺ mean? - Mathematics Stack Exchange
You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I …
notation - Is there an accepted symbol for irrational numbers ...
Jul 23, 2013 · $\\mathbb Q$ is used to represent rational numbers. $\\mathbb R$ is used to represent reals. Is there a symbol or convention that represents irrationals. Possibly $\\mathbb …
What is the difference between plus-minus and minus-plus?
The symbol $\mp$ only appears when there's already a $\pm$, but we want to establish a correspondence between opposite signs in an equation. Note that it's only a matter of style; …
Sniffies color and symbol meanings? : r/Sniffies - Reddit
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?
notation - What does "∈" mean? - Mathematics Stack Exchange
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.
Implies ($\Rightarrow$) vs. Entails ($\models$) vs. Provable …
@Hibou57 I have seen the symbol $\implies$ used to mean different things. I was taking it to be the logical connective of material implication, which some people instead call $\to$, because …
notation - What is the mathematical symbol for range?
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. …
What does the small number on top of the square root symbol …
I just came across this annotation in my school's maths compendium: The compendium is very brief and doesn't explain what this means.