Euclid 2 Flashcards

1
Q

each line is composed of infinite points (of either 0 or finite length). If it’s zero length, then the line has no length (0+0+0+0=0). If it’s finite length, then the line has an infinitely equal amount of finite lengths; therefore infinite in length.

A

Paradox of Plurality

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2
Q

both odd and even sets of numbers paired one-to-one with natural numbers. the size of the even numbers is the same cardinality as the size of the odd numbers.

A

Denumerable Sets

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3
Q

There are infinitely many natural numbers; even and odd integers are a subset of them. But these subsets are the same size as the superset. (This wouldn’t be with finite sets)

A

Strangeness of the Infinite

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4
Q

The length of a line is not determined by the sum of its points. Length is an additional property over and above the points. There’s an additional metric property needed.

A

Real Lines

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