Jun 25, 2014 · I have started seeing the "∈" symbol in math. What exactly does it mean? I have tried googling it but google takes the symbol out of the search.

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 B...

May 6, 2015 · The meaning of various equality symbols Ask Question Asked 10 years, 2 months ago Modified 9 years, 2 months ago

May 2, 2015 · Okay this may sound stupid but I need a little help... What do d dx d d x and dy dx d y d x mean? I need a thorough explanation. Thanks.

I am currently learning about the concept of convolution between two functions in my university course. The course notes are vague about what convolution is, so I was wondering if anyone could giv...

Feb 11, 2015 · At first English is not my native language if something is not perfectly formulated or described I'm sorry. Could somebody please tell me what the generally valid statement of this is? $$ \\forall...

Oct 31, 2017 · I'm doing a research report, and I need to determine a companies assets. So I found their annual report online, and for the assets, it says (in thousands). One of the rows is: Net sales $ 26,234...

I would agree with the rule " [dependent] versus [independent]." The word "versus" can mean "compared with," and it more frequently makes sense to compare a dependent value with its associated independent value, because well, the independent variable doesn't really "care" about the existence of the dependent variable, but the converse relationship is by definition.

Oct 31, 2020 · In normal use, integral length would be equal to some integer, while unit length would be of length 1 1 (see "unit number" here). Presumably the author meant, "in the unit (with a different meaning!) we use to measure lengths, these lengths are integer-valued".

Jan 26, 2020 · The set of (multiplicative) invertible elements (also called ‘units’) in the ring Z/nZ Z / n Z. If n n is prime, this ring is a field, and thus, the set of units is just the set of non-zero elements.