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#26 2014-03-30 14:21:43

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 18,223
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Re: Contradictory mathematical terminologies?

JaneFairfax wrote:

2. Let X be a topological space. Then the empty set and X are sets that are both open and closed! faint

Open and Closed Sets have got nothing to do with the day-to-day open and closed.


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
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