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 have encountered this when referencing subsets and vector subspaces Is ⊊ a sort of ≤ or <. 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 Background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc. Below is a list that tries to be exhaustive about the usage of square brackets I tried to arrange them so that more common usages come first Maybe such a list can never be complete, but are ther.
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