Home
Subjects
Create
Search
Log in
Sign up
Upgrade to remove ads
Only $2.99/month
Math
Discrete Math
Set Theory
Set Theory Vocab- Finite
STUDY
Flashcards
Learn
Write
Spell
Test
PLAY
Match
Gravity
Terms in this set (24)
Set
Collection of objects. Names A={
Element
the objects of a set. Denoted by lowercase letters a, b, c,...
Well defined set
a set whose contents are clearly defined.
3 methods to rep. a set
1. word description
2. roster method
3. set-builder notation
empty set
a set that contains no elements.
cardinal number
number of distinct elements in a set.
equivalent
2 sets that contain the same number of elements.
finite set
the number of elements one, zero, or a natural number.
infinite set
a set whose # of elements are not countable.
equal sets
they are the same.
subset
if every element of a set A is also an element of set B, then we say that A is a subset of B and we write AcB. (underline)
proper set
every element of a set is also an element in another set, and the sets are not equal.
number of subsets
given n elements in a set, 2n.
number of proper subsets
given n elements in a set 2n-1.
universal sets
the set of all elements.
venn diagram
visual representation of sets.
disjoint sets picture
A and B inside universal set, but not touching.
proper subsets picture
A in a universal set with B outside the circle with A.
equal set picture
2 set having the same number in them and amount. Ex: set A= {1,2,3,4,5,6} set B={2,5,4,1,6,3}
sets w/ some common elements picture
where A=B and is in the same circle, and is in a universal set.
complement of a set
the set of all elements in U that are not in A.
intersection of a set
the set of elements common to sets A and B written AnB.
union of sets
written AUB is the set of all elements of A, B or both.
cardinal # of union if 2 finite sets
the number of elements in AnB is n(A) + n(B) - n(AnB).
You might also like...
Finite Math
24 terms
CH2- Sets
23 terms
Set Theory
20 terms
Math 120 Chapter 2
19 terms
Other sets by this creator
Prob and Stat Chapter 1, 14.1, & 14.2
60 terms
Chapter 1
23 terms