Other symbols i have seen used for is defined to be equal to are three horizontal lines instead of two, and $=$ with either a triangle or def written directly above it Maybe such a list can never be complete, but are ther. I have seen variants of these used by people who predate widespread knowledge of computer programming
It would be interesting to know the earliest uses of a special symbol for this (and what symbols were chosen) I tried to arrange them so that more common usages come first I have encountered this when referencing subsets and vector subspaces
The curly versions of the less than and greater than signs are commonly used to denote some other ordering than the one that we are usually talking about For instance there is a partial ordering on the symmetric matrices, where a≼b a ≼ b if and only if b−a b a is a nonnegative definite matrix We write ≼ ≼ instead of ≤ ≤ to avoid confusion with the ordering that we use more. Whats the meaning of this symbol
Its a three dot symbol ∴ i read a book, im could not find any definition of this symbol This is about continuum property of the natural numbers and the archimed. What exactly does $\\ll$ mean
(or the corollary, $\\gg$) on wikipedia, the example they use i. The meaning of various equality symbols ask question asked 10 years, 7 months ago modified 9 years, 7 months ago Does it mean either less than or greater than In other words, not equal
I am trying to understand a book that says th. The interplay of meaning and axiomatic machine mathematics, captured by the difference between $\models$ and $\vdash$, is a subtle and interesting thing. Please provide additional context, which ideally explains why the question is relevant to you and our community Some forms of context include
Below is a list that tries to be exhaustive about the usage of square brackets
