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Mathematics
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StefanH
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stefuzius84 (at) web (dot) de

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Top posts
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21
With this definition of completeness, Gödel's Incompleteness result seems not surprising, so why it was back then?
Apr 6, 2018
20
Can mathematics get from other sciences what it got from physics?
Jan 9, 2015
20
How do the open sets look in the product topology?
Jul 13, 2013
13
Categorial definition of subsets
Feb 5, 2013
12
Axiom of Choice and Cartesian Products
Jan 2, 2014
12
Computing an Ito Integral using the Definition
Jul 9, 2015
12
The notation $\prod_{g\in G} g$ for a finite group not well-defined.
Feb 9, 2013
12
How are simple groups the building blocks?
Jan 30, 2016
11
Is there a difference between allowing only countable unions/intersections, and allowing arbitrary (possibly uncountable) unions/intersections?
Jun 25, 2012
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
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36
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"
15
On the realisation of monoids as syntactic monoids of languages
14
Conway's lesser-known results