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The quiz on Wednesday will consist of definitions, and will be brief. Your wording on a definition must be precise, and you will be required to give a symbolic form and a verbal interpretation of the symbols. You may be asked to produce examples or verify that something satisfies the requirements of a definition. The ideas you should know include:
f: X -> Y
f-1: Y -> X
f o g
f is one-to-one
f is onto
f is a bijection
f = g
idX
f(A)
f-1(B)
R is a relation on X
R is reflexive
R is symmetric
R is transitive
º is an equivalence relation on X
[a]
X/»
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