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23 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Neither surjective nor injective
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What kind of mapping is this?
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Bijection
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What kind of mapping is this?
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Bijection
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What kind of mapping is this?
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Injection or one-to-one
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What kind of mapping is this?
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Injection or one-to-one
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What kind of mapping is this?
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Neither injection nor surjection
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What kind of mapping is this?
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Surjection or onto
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What kind of mapping is this?
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Surjection or onto
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What kind of mapping is this?
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Another name for surjection
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onto
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Another name for onto
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surjection
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Another name for injective
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one-to-one
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Another name for one-to-one
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Injective
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How many fixed points does a rotation have?
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One
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How many fixed points does a translation have?
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None
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How many fixed points does a glide have?
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None
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How many fixed points does a reflection have?
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An infinite number of fixed points (those on the line we are reflecting over).
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Which isometries preserve orientation?
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Rotation and translation
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Which isometries reverse orientation?
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Glide and reflection.
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Equilateral
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Isosceles, scalene or equilateral?
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Isoceles
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Isosceles, scalene or equilateral?
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Scalene
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Isosceles, scalene or equilateral?
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Define surjection
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For every y in the codomain Y there is at least one x in the domain X with f(x) = y.
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Surge covers all - every y has an x
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Define injection
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For every y in the codomain Y, there is at most one x in the domain X with f(x) = y.
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Two don't map to one - can't inject the same piece of skin with two needles at the same time.
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