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2014年6月25日 · Another possible notation for the same relation is {\displaystyle A\ni x,} A\ni x, meaning "A contains x", though it is used less often. The negation of set membership is denoted by the symbol "∉". Writing {\displaystyle x\notin A} x\notin A means that "x is not an
2016年12月13日 · An finite ordered set of n n elements is called a n n -tuple, and is commonly denoted with parenthesis, e.g. (1, 2,..., 5) (1, 2,..., 5) for the 5-tuple of 1 to 5. But this notation clashes with open intervals, when working with 2-tuples. So you should probably add some explanatory text depending on who your target audience is.
2011年3月18日 · $\begingroup$ I was aware of Pascal using :=, but not the others.I think it is possible that the language designers of that time where influenced by maths (as has happened a number of times), but := is so far the only easily typable symbol mentioned here, so it is perfectly reasonable to assume it stems from programming languages in the first place.
I still think the universal quantifier is the answer you are looking for. From the wording you use e.g. "loop" and "iteration", I infer that your confusion might be coming form the fact that in mathematics there are no variables only constants (here I using the meaning from computer science).
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The backwards epsilon notation for "such that" was introduced by Peano in 1898, e.g. from Jeff Miller's Earliest Uses of Various Mathematical Symbols: Such that. According to Julio González Cabillón, Peano introduced the backwards lower-case epsilon for "such that" in "Formulaire de Mathematiques vol. II, #2" (p. iv, 1898).
2016年5月19日 · Not equal to is an accepted mathematical symbol - so would this be acceptable: $\not>$? I was searching around but I couldn't find any qualified sites that would point me in that direction. So, I would like to know if there are symbols for, not greater, less than, less than or equal to, greater than or equal to x.
92. Sup ("supremum") means, basically, the largest. So this: sup k≥0 T(k)(N) sup k ≥ 0 T (k) (N) refers to the largest value T(k)(N) T (k) (N) could get to as k k varies. It's technically a bit different than the maximum—it's the smallest number that is greater-than-or-equal to every number in the set.
2018年3月27日 · Departing a little from the other very good answers here. Strictly speaking, nabla is the name of the typographical glyph, the upside down triangle: just a symbol on paper, meaning whatever the author intends it to mean. The name comes from the glyph's resemblance to an old fashioned harp.
asked Jun 29, 2013 at 13:41. Marcus Junius Brutus. 923 1 7 18. 2. In set theory \mid or : is often used but I haven't really seen any logical symbol used for "such that" in other situations. But now that I think of it there is the \ni symbol used as "such that" in mathematical logic I believe. – user41489.
