notation - What does := mean? - Mathematics Stack Exchange
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.
different between sign function and signum function?
2023年9月26日 · I am confused because I know they differ in how they handle zero, but I have found several publications in computer science that use the signum function and the sign function interchangeably. I would like to know what mathematics says about their differences.
The difference between a / and ÷ use - Mathematics Stack Exchange
I'm confused with the $/$ symbol meaning the same as $÷$ $4+2(8-3)÷2-1$ should equal $8$ using PEMDAS. However if using the Wikipedia's definition of the slash "Used between numbers slash means
Difference between $⊂$ and $⊆$? - Mathematics Stack Exchange
2018年10月3日 · I was solving the exercises in Discrete Mathematics and its applications book. Determine whether each of these statements is true or false. {0} ⊂ {0} {∅} ⊆ {∅} I thought both 1 and 2 are tru...
Much less than, what does that mean? - Mathematics Stack …
2015年11月7日 · $\begingroup$ @Solitary In mathematics we make precise statements about precisely defined concepts; this is what distinguishes mathematics from everything else.
Wilcoxon signed rank test vs paired sample sign test
2021年3月14日 · so I had an argument with my classmate saying about which test to use, (Wilcoxon Sign-ranked test or Paired Sample Sign test). I say that Wilcoxon Sign-Ranked test is more appropriate since it has a near-symmetrical data. But he said, to be sure Paired Sample sign test is more appropriate. I can't convince him or he can't convince me.
Difference between Signum and Sine - Mathematics Stack Exchange
2012年11月3日 · What is the difference between signum(t) and sine(t) in terms of angles i-e; at which angles signum is zero and 1?
terminology - Equal sign meaning in equations vs functions ...
2024年2月6日 · In equations, the equal sign seems to be used to denote the following things; (these descriptions are my own words, I'm sure there are "real" names for what I am trying to describe, also I don't really understand the difference between "equals" and "is equivalent to"):
Implies ($\\Rightarrow$) vs. Entails ($\\models$) vs. Provable …
The distinction is less strong than object‑level / meta‑level distinction, this is a domain distinction. Comparing “$\vdash$ vs $\Rightarrow$” to “$\Rightarrow$ vs $\rightarrow$” is a bit like comparing explicit type conversion to implicit type conversion… a comparison to be used with a lot of care, that's just to give a picture.
What is the Versus symbol? - Mathematics Stack Exchange
2018年3月23日 · There is no commonly used symbol for versus of which I'm aware. What you're asking for seems closest to some usage of the exclusive OR symbol (i.e XOR, $\oplus$), but I don't think that works here, as you seem to be looking for one number or …