Week 10; 8.3 - 8.4 Flashcards

1
Q

Prove

A
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2
Q

Prove

A

RHS if compact, LHS is not

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3
Q

Prove

A
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4
Q

We say that a function between metric spaces is uniformly continuous if

A
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5
Q

Prove

A
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6
Q

A subset K of a metric space (X,d) is said to be sequentially compact if

A

Every sequence in K has a subsequence which converted to a limit in K

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7
Q

Examples of sequentially compact and not

A
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8
Q

If K is sequentially compact in (X, d) and the metric ρ is equivalent to d then

A
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9
Q

Prove that every closed and bounded subset of R is sequentially compact?
And note?

A

(Converse is also true)

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10
Q

A metric space is totally bounded if

A
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11
Q

Define a finite ε-net

A
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12
Q

Prove

A
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