26 февр. 2024 г. · The symbol U+2229 ∩ was first used by Hermann Grassmann in Die Ausdehnungslehre von 1844 as general operation symbol, not specialized for intersection. |
2 апр. 2023 г. · Between two sets it's the intersection. The subset that is common to both sets. In this form it's kind of like sigma notation is for addition. |
17 июл. 2023 г. · The upside down U (frown) is for intersection of sets, not lines ... I don't recall the upside-down U either in any math course in my life. |
17 июл. 2023 г. · Yes, I'm saying the arc shape is close enough to an upside down U and depending on who is writing it, it can appear more or less like a U. |
16 сент. 2020 г. · Also you'll see them for union and intersection too (U and upside down U respecticely), those are used a lot in real analysis and topology a lot ... |
15 мар. 2016 г. · The sign for intersection. It means the probability of A and B together. https://en.m.wikipedia.org/wiki/Intersection_(set_theory). |
18 июл. 2023 г. · Shoddy math in both the use of math symbol upside down U (represents the common elements between two sets) when there is no math symbol to ... |
6 сент. 2022 г. · An upside down U or ∩ is INTERSECTION. You take all the elements that are in all the sets and put them all into a new set. Upvote 2 |
31 мар. 2024 г. · '∪' looks like 'U' so it's union and the other one will be intersection. |
![vector calculus] can anybody explain exactly what the upside ...](imgx.php?https://i.redd.it/p9ry0e623vn81.jpg)
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