Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Set well-defined collection of objects. denoted by uppercase letter A,B,C
Element the objects of a set denoted by lowercase letters a,b,c
Well defined set facts
3 methods to represent a set 1. word description 2. roster method 3. set-builder notation
Empty set unique set having no elements
cardinal number natural numbers used to measure the cardinality (size) of sets
equivalent set have the same cardinality
finite set set that has a finite number of elements.
infinite set a set that is not a finite set
equal sets have the exact same elements in them,
subset relationship of one set being a subset of another
proper subset a set A is a subset of A that is not equal to A . In other words, if B is a proper subset of A , then all elements of B are in A but A contains at least one element that is not in B
number of subsets number of subsets
number of proper subsets number of proper subsets
universal set the set containing all objects or elements and of which all other sets are subsets.
venn diagram shows the relationship among three overlapping sets X, Y, and Z.
disjoint sets picture
proper subsets picture
equal sets picture
sets w/ some common elements picture
complement of a set When all sets under consideration are considered to be subsets of a given set U
union of a set the set of all elements in the collection
intersection of a set the set that contains all elements of A that also belong to B
cardinal number of union of 2 finite sets Two finite sets have the same cardinality only if they have the same number of elements.
Created by: trinitylintz