Union
The union of two sets 
and 
is the set obtained by combining the members of each. This is written 
, andis pronounced `` union '' or `` cup .'' The union of sets 
through 
is written 
.
Let , , 
, ... be sets, and let 
denote the probability of 
. Then
 | (1) |
 | |
 | |
 | |
 | |
 | |
 | |
 | |
 | (2) |
and are Disjoint, by definition 
, so | (3) |
disjoint elements 
, 
, ..., 
 | (4) |
 | (5) |
 | (6) |
- Chordal
- Chordal Theorem
- Chow Coordinates
- Chow Ring
- Chow Variety
- Christoffel-Darboux Formula
- Christoffel-Darboux Identity
- Christoffel Formula
- Christoffel Number
- Christoffel Symbol of the First Kind
- Christoffel Symbol of the Second Kind
- Chromatic Number
- Chromatic Polynomial
- Chu Identity
- Church's Theorem
- Church's Thesis
- Church-Turing Thesis
- Chu Space
- Chu-Vandermonde Identity
- Chvátal's Art Gallery Theorem
- Chvátal's Theorem
- ci
- Ci
- Cigarettes
- Cin