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 settle on …
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. At least, …
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.
What's "the most right" symbol to use for "defined to be equal to"?
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 …
What is mathematical basis for the percent symbol (%)?
Percent means 1 part of 100 or 1/100 and is indicated with %. Per mille means 1 part of 1000 or 1/1000 and is indicated with ‰, so it seems that these symbols indicate the mathematical operations ...
Symbol for "not always equal"? - Mathematics Stack Exchange
Jun 15, 2023 · I recently used the first symbol in a math seminar presentation when comparing the various syntax and semantic interpretations of MOD in mathematics and computer science. For …
What does the function f: x ↦ y mean? - Mathematics Stack Exchange
Apr 20, 2016 · I am doing IGCSE Maths, and am having a few problems with function notation. I understand the form f(x) f (x). What does the form f: x ↦ y f: x ↦ y mean? Could you also give one or …
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?
Symbol for “such that” (not in set) - Mathematics Stack Exchange
Using ∋ ∋ alone can cause quite some confusion, so adding a small dash ′ indicates that this is not a symbol to denote membership/containment; rather, it denotes "such that." Also, there are actually …
Is there a mathematical symbol for "For every element"?
Jun 19, 2012 · Is there a mathematical symbol that means "For every element"? I want the meaning to have similar function as an iteration, say for loop.