The approximation sign "≈" I use for decimal approximations with tilde "~" being a rougher approximation. Tilde "~" I use to state a geometric shape is similar to another one ie a triangle of sides 3/4/5 is similar to a triangle with sides 30/40/50. I write ABC ~ A'B'C' where A'B'C' is a dilated version of the pre-image.

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'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

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.

Mathematical Notation - Arrow Sign. Ask Question Asked 11 years ago. Modified 3 years, 5 months ago.

2012年11月3日 · sine vs Sine: understanding the differences 0 How to find sine of the third angle of a triangle, given sines of two other angles and the length of a side between these angles?

2014年8月14日 · $\begingroup$ Yes, but the sign is not explicitly mentioned. You don't need to dedicate a bit to specify the sign and when you don't specify the sign, the value is assumed to be positive. $+255$ would be a signed value, but this would require 9 bits (1 for the sign and 8 for the number 255).$255$ is an unsigned value requiring only 8 bits ...

2015年5月19日 · What is the meaning of the delta equivalent ($\overset{\Delta}{=}$) sign? I met this in a communication theory text.

The only confusion comes from the “ $|…|$ ” sign, which has been used both for the absolute value of a number and also as the modulus of a vector. Therefore, some used the “ $|| … ||$ ” for the latter to make the meaning distinct. Some don’t even bother when the context is clear or when the readers should be able to distinguish ...

$\begingroup$ @davide No. Not for understanding the text mentioned by the original poster. Note what gets quoted: "Observe that belonging (∈) and inclusion (⊂) are conceptually very different things indeed.