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## Union (set theory) - Wikipedia

en.wikipedia.org/wiki/Union_(set_theory)

In set theory, the union (denoted by ∪) of a collection of sets is the set of all elements in the ... Since sets with unions and intersections form a Boolean algebra, ...

## Intersection and union of sets (video) | Khan Academy

Sal shows examples of intersection and union of sets and introduces some set notation.

## Union and Intersection - Themathlab.com

www.themathlab.com/geometry/section2/union and intersection.htm

The UNION of two sets is the set of elements which are in either set. For example: let A = (1,2,3) ... The INTERSECTION of A and B, written A intersection B = (3).

## SparkNotes: Compound Inequalities: Union and Intersection of Sets

www.sparknotes.com/math/algebra1/compoundinequalities/section2.rhtml

A summary of Union and Intersection of Sets in 's Compound Inequalities. Learn exactly what happened in this chapter, scene, or section of Compound ...

## Union and Intersection

mbaker.columbiastate.edu/algebratips_pages/union and intersection.htm

Union and Intersection. The intersection and union of sets can be confusing especially when you have to understand the words “and” and “or” which are ...

## Union and intersection - Everything Maths and Science

Union and intersection. Definition 1: Union. The union of two sets is a new set that contains all of the elements that are in at least one of the two sets. The union is ...

Aug 29, 2010 ... Sets: Union and Intersection. Just a very quick and basic idea of the 'union' and ' intersection' of two sets.

## Sets and Venn Diagrams - Math is Fun

www.mathsisfun.com/sets/venn-diagrams.html

This is called a "Union" of sets and has the special symbol ∪: ... is Union: is in either set; ∩ is Intersection: must be in both sets; − is Difference: in one set but not ...

## Set Operations | Union | Intersection | Complement | Difference ...

www.probabilitycourse.com/chapter1/1_2_2_set_operations.php

The union of two sets is a set containing all elements that are in A or in B ( possibly both). For example, { 1 , 2 } ∪ { 2 , 3 } = { 1 , 2 , 3 } . Thus, we can write x ∈ ( A ...

## functions - Image of the union and intersection of sets. - Mathematics ...

math.stackexchange.com/questions/1131956/image-of-the-union-and-intersection-of-sets

Feb 3, 2015 ... The case where f ( A ∪ B ) = f ( A ) ∪ f ( B ) is trivial and I've proved this many times in other classes. However, I believe that the problem I am ...