In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical Operators Block.

It's quite common to see excess-N notation when denoting the exponent of a floating point numbers. For example, 32-bit floating point numbers often use 8 bits in excess-127 notation to represent the …

Feb 20, 2013 · A better, but less common, notation is $\varepsilon$ (formatted with $\varepsilon$). You can find answers and comments related to that latter symbol $\varepsilon$ in the linked posts.

No, I would be concerned about $\otimes$ causing confusion with the outer product (although the outer product will produce a matrix, and the componentwise product will produce a vector, so if the context …

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. For example, the …

They are integral parts of larger notations which don't have any individual formal meaning -- the fact that expressing the entire notation in English sometimes involves saying "such that" between the things …

Jan 30, 2015 · Here is the definition of Lipschitz domain given by Wikipedia. Let n ∈ N, and let Ω be an open subset of Rn. Let ∂Ω denote the boundary of Ω. Then Ω is said to have Lipschitz boundary, and …

Jun 8, 2016 · The reason for abbreviation is a little clearer when calling it the signum function.

Sep 11, 2017 · Sometimes $\mathbb {N}_0$ is used to denote the natural numbers including zero, so this notation may be ambiguous.

May 19, 2016 · As for not introducing symbols, I was using the notation introduced by the OP themselves. I was trying to explain why we see $\neq$ a lot more often than $\not >$, for example.