Study your flashcards anywhere!
Download the official Cram app for free >
 Shuffle
Toggle OnToggle Off
 Alphabetize
Toggle OnToggle Off
 Front First
Toggle OnToggle Off
 Both Sides
Toggle OnToggle Off
 Read
Toggle OnToggle Off
How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card between the front and back.down keyup key
H key: Show hint (3rd side).h key
A key: Read text to speech.a key
23 Cards in this Set
 Front
 Back
 3rd side (hint)
Neither surjective nor injective

What kind of mapping is this?



Bijection

What kind of mapping is this?



Bijection

What kind of mapping is this?



Injection or onetoone

What kind of mapping is this?



Injection or onetoone

What kind of mapping is this?



Neither injection nor surjection

What kind of mapping is this?



Surjection or onto

What kind of mapping is this?



Surjection or onto

What kind of mapping is this?



Another name for surjection

onto



Another name for onto

surjection



Another name for injective

onetoone



Another name for onetoone

Injective



How many fixed points does a rotation have?

One



How many fixed points does a translation have?

None



How many fixed points does a glide have?

None



How many fixed points does a reflection have?

An infinite number of fixed points (those on the line we are reflecting over).



Which isometries preserve orientation?

Rotation and translation



Which isometries reverse orientation?

Glide and reflection.



Equilateral

Isosceles, scalene or equilateral?



Isoceles

Isosceles, scalene or equilateral?



Scalene

Isosceles, scalene or equilateral?



Define surjection

For every y in the codomain Y there is at least one x in the domain X with f(x) = y.

Surge covers all  every y has an x


Define injection

For every y in the codomain Y, there is at most one x in the domain X with f(x) = y.

Two don't map to one  can't inject the same piece of skin with two needles at the same time.
