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Mathematics
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StefanH
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stefuzius84 (at) web (dot) de

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All Questions Answers
Score Newest
question
21
With this definition of completeness, Gödel's Incompleteness result seems not surprising, so why it was back then?
Apr 6, 2018
answer
20
Can mathematics get from other sciences what it got from physics?
Jan 9, 2015
question
20
How do the open sets look in the product topology?
Jul 13, 2013
answer
12
How are simple groups the building blocks?
Jan 30, 2016
question
12
Categorial definition of subsets
Feb 5, 2013
question
12
The notation $\prod_{g\in G} g$ for a finite group not well-defined.
Feb 9, 2013
question
11
Let $X$ and $Y$ be Banach spaces, show that if they are isomorphic, then $X$ is reflexive iff $Y$ is reflexive.
Jan 6, 2013
question
11
Is there a difference between allowing only countable unions/intersections, and allowing arbitrary (possibly uncountable) unions/intersections?
Jun 25, 2012
question
10
Axiom of Choice and Cartesian Products
Jan 2, 2014
question
10
Example of incomplete, but decidable theory, and of complete and undecidable theory, question
Nov 28, 2018
Top network posts
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33
Why do people with perfect pitch perceive tunes not in 440 Hz out of tune?
17
Why are regular expressions defined with union, concatenation and star operations?
16
Theoretical Question about "Smoke On The Water"
14
On the realisation of monoids as syntactic monoids of languages
12
Using a fidget spinner to rotate in outer space

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