Is there a natural topology on the set of open sets?
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... $ can one assign a natural topology to ... The intersection of a compact set of open sets is again ... Is there a natural topology on the set of open sets ?
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For example, suppose you want to show R (the reals) is uncountable. One famous proof is based on Cantor's diagonal reasoning. But to use it you must know every real number has a decimal representation, actually you have to work not on R but on the field...
Answer:
There is something that needs to be pointed out here: all topological and algebraic notions can be enterely...
Steiner at Yahoo! Answers Mark as irrelevant Undo
The interior Ǻ of a set A is the union of all open sets included in A a) prove that, for any set A, its interior Ǻ is open. b) prove that, for any set A, we have Ǻ ⊆ L(A) Please explain :)
Answer:
a) To prove this, we need to show that for any a in int(A), there is an open set S such that a is in...
May at Yahoo! Answers Mark as irrelevant Undo
please think on the lines of function f to be defined on each set such that it is complex valued and has k continuous differentials.
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You can't really say, The topology is independent from the base set. I could say only the whole set...
James Waddington at Quora Mark as irrelevant Undo
A is pre open iff A subset of interior of A clouser
s topology at Yahoo! Answers Mark as irrelevant Undo
Help me plan my (somewhat pathetic) workouts! I've been on the hack diet for nine months, and have lost lots of weight (65 down, have another 15 or so to go). I also started doing the exercise program recommended in the diet, though I've substituted...
Answer:
Is there a reason you're doing calisthenics and not lifting weights? Calisthenics aren't bad for you...
maxwelton at Ask.Metafilter.Com Mark as irrelevant Undo
If you encounter the Microsoft Lync 2013 Installation topology error, here is your fix. Installing Lync Server 2013: Topology File Share Error Fix Today, the FortressITX engineers came across an issue with Microsoft Lync 2013. While installing the program...
Answer:
The errors generated in the topology log are very generic: These errors have no detail and are useless...
Michael Peralta at Quora Mark as irrelevant Undo
By "train your model iteratively across several training/validation sets," I mean split original training set into several data sets, train on remaining training records, predict on validation set 1, append the predicted values to validation...
Answer:
I'm not sure how you would be able to determine how good your model was from this. Certainly you would...
Ralph Winters at Quora Mark as irrelevant Undo
I read that the set of all sets is a contradictory concept. I thought about this. If U is such set, then U must be an element of U (not only that U is - of course- a subset of U, but that U belongs to U like 2 belongs the reals). Though this sounds kinda...
Answer:
One needs to be careful with words here: let's say that a "set", properly defined, is a collection...
Taty at Yahoo! Answers Mark as irrelevant Undo
Sets of equal cardinality aren't necessarily themselves equal, so that it is possible to construct two sets of equal cardinality with one having an infinite number of elements more than the other. Can one reasonably construct an argument that makes a...
Answer:
If two sets have the same cardinality, then neither one has more elements than the other. That's the...
Justin Rising at Quora Mark as irrelevant Undo
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