StefanH

http://stefuzius.wordpress.com/

stefuzius84 (at) web (dot) de

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Why do people with perfect pitch perceive tunes not in 440 Hz out of tune?

tuning pitch absolute-pitch relative-pitch asked Mar 7, 2017 at 10:26

music.stackexchange.com

21 votes

With this definition of completeness, Gödel's Incompleteness result seems not surprising, so why it was back then?

logic first-order-logic incompleteness asked Apr 6, 2018 at 14:20

math.stackexchange.com

20 votes

How do the open sets look in the product topology?

general-topology analysis asked Jul 13, 2013 at 14:26

math.stackexchange.com

16 votes

Theoretical Question about "Smoke On The Water"

guitar theory rock tonal asked Apr 12, 2017 at 16:35

music.stackexchange.com

15 votes

On the realisation of monoids as syntactic monoids of languages

fl.formal-languages automata-theory regular-language algebra monoid asked Jun 9, 2016 at 18:55

cstheory.stackexchange.com

13 votes

Categorial definition of subsets

abstract-algebra set-theory category-theory asked Feb 5, 2013 at 21:49

math.stackexchange.com

12 votes

The notation $\prod_{g\in G} g$ for a finite group not well-defined.

abstract-algebra group-theory asked Feb 9, 2013 at 22:18

math.stackexchange.com

12 votes

How can a camera be both 12MP and 1080p, when 1920x1080 is just 2,073,600?

cameraphones megapixels specification asked Feb 1, 2017 at 12:18

photo.stackexchange.com

12 votes

Using a fidget spinner to rotate in outer space

attitude microgravity rotation humans asked Dec 31, 2020 at 11:16

space.stackexchange.com

11 votes

Is there a difference between allowing only countable unions/intersections, and allowing arbitrary (possibly uncountable) unions/intersections?

general-topology analysis logic set-theory asked Jun 25, 2012 at 15:00

math.stackexchange.com

Top Answers

Can mathematics get from other sciences what it got from physics?

math.stackexchange.com

Why are regular expressions defined with union, concatenation and star operations?

cs.stackexchange.com

Are there a mathematical theorieshelp us to prove $ i^2={-1}$?

math.stackexchange.com

Conway's lesser-known results

mathoverflow.net

How are simple groups the building blocks?

math.stackexchange.com

Finding a career as a researcher without any PhD, work experience, and/or relevant academic degree

academia.stackexchange.com

What's the point in being a "skeptical" learner

math.stackexchange.com

How to find the number of anti-symmetric relations?

math.stackexchange.com

Myhill-Nerode and closure properties

cs.stackexchange.com

Show that a semigroup with $aS \cup \{a\} = bS \cup \{b\}$ and $Sa \cup \{a\} = Sb \cup \{b\}$ is a group

math.stackexchange.com

For some learning piano at a later stage in life e.g past late 20s, what must they be aware of to make the most of it?

music.stackexchange.com

How can we think and/or write rigorously about integration by substitution?

math.stackexchange.com

Regular language as finite union of periodic sets

cs.stackexchange.com

Generalization of $|HK|=\frac{|H||K|}{|H∩K| }$, where $H,K$ are finite subgroups

math.stackexchange.com

Context free grammar where number of a's is larger than number of b's in any prefix of the string

cs.stackexchange.com

Is it recommended to learn a piece you really like, but is way above your level?

music.stackexchange.com

Algebra oriented branch of theoretical computer science

cstheory.stackexchange.com

Do Monoid Homomorphisms preserve the identity?

math.stackexchange.com

Has anyone mixed linear algebra with formal language theory in this way?

cstheory.stackexchange.com

Why is proving something is NP-complete useful, and where can I use it?

cs.stackexchange.com

Papers of the masters translated to English in one location

mathoverflow.net