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Top Questions
11
votes
Characterizing simply connected spaces
general-topology
algebraic-topology
asked Mar 1, 2021 at 13:10
math.stackexchange.com
11
votes
Im 20. Jahrhundert verwendete Schreibschriften
handwriting
asked Jun 4, 2020 at 11:02
german.stackexchange.com
9
votes
Characterizing continuous, open and closed maps via interior and closure operators
general-topology
continuity
open-map
closed-map
asked Oct 31, 2022 at 1:25
math.stackexchange.com
8
votes
Under what conditions $\pi_1(X \vee Y) \approx \pi_1(X) * \pi_1(Y)$?
algebraic-topology
fundamental-groups
asked Jan 25, 2023 at 0:18
math.stackexchange.com
8
votes
Applications of the exponential law $Z^{X \times Y} \approx (Z^Y)^X$
general-topology
algebraic-topology
asked Mar 14, 2020 at 12:24
math.stackexchange.com
8
votes
m/w/d (männlich/weiblich/divers)
word-usage
asked Jan 30, 2021 at 10:06
german.stackexchange.com
7
votes
Non-equivalence of two variants of the excision axiom
algebraic-topology
homology-cohomology
asked Aug 24, 2018 at 10:04
math.stackexchange.com
6
votes
"Asymmetry" in the construction of products and coproducts in concrete categories
category-theory
soft-question
direct-product
coproduct
asked Jan 16 at 14:07
math.stackexchange.com
6
votes
When does $r + \sqrt s$ with $r,s \in \mathbb Q$ have a cubic root of the form $u \pm \sqrt v$ with $u,v \in \mathbb Q$?
polynomials
roots
cubic-equations
nested-radicals
asked May 23, 2021 at 0:37
math.stackexchange.com
6
votes
Herkunft von "Mit dem Ofenrohr ins Gebirge schauen"
etymology
phrases
asked Jun 25, 2020 at 0:13
german.stackexchange.com
1
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Top Answers
52
Is Liszt really pronounced like the English word "list"?
german.stackexchange.com
47
Can a cube of discontinuous function be continuous?
math.stackexchange.com
36
Royal "We" in scientific writing
german.stackexchange.com
26
Is differentiation as a map discontinuous?
math.stackexchange.com
19
What is the German idiom or expression for when someone is being hypocritical against their own teachings?
german.stackexchange.com
18
Having trouble understanding condition for Rolle's Theorem (russian translation)
math.stackexchange.com
18
How to prove the two answers to an integral are equivalent
math.stackexchange.com
17
Why is the tangent of an angle called that?
math.stackexchange.com
17
Is Gandalf really on 'du' terms with the Balrog? (Odd 'duzen' example)
german.stackexchange.com
17
What is the motivation for sequences to be defined on natural numbers?
math.stackexchange.com
17
weird usage of "dran"
german.stackexchange.com
16
Hat die Verwendung des bestimmten Artikels in "die Ukraine" eine politische Konnotation?
german.stackexchange.com
15
10s or 100s in German
german.stackexchange.com
14
If $f(x)-f^{-1}(x)=e^{x}-1$, what is $f(x)$?
math.stackexchange.com
14
Translation of "for some" as an existential quantifier
german.stackexchange.com
13
What does "guter Mann" mean? How can one use it correctly?
german.stackexchange.com
13
Exercise 1.3.16 in Hatcher
math.stackexchange.com
12
Is $\Bbb R^2\times\Bbb S^2$ simply connected?
math.stackexchange.com
12
Why is the tangent bundle defined using a disjoint union?
math.stackexchange.com
12
Why do we only allow for finite intersections in the definition of a topology?
math.stackexchange.com
12
Homeomorphism between the unit disc and the unit square
math.stackexchange.com
11
Why is the subspace topology defined as it is?
math.stackexchange.com
11
Hatcher: Decomposition of space into X path components $\{X_\alpha\}$ gives isomorphism $H_n(X) \cong \bigoplus H_n(X_\alpha)$
math.stackexchange.com
11
Is one point compactification functorial?
math.stackexchange.com
11
Characterizing simply connected spaces
math.stackexchange.com
11
What does "Was erlauben Sie sich?" mean?
german.stackexchange.com
11
"Sabbelwasser trinken"
german.stackexchange.com
10
Difference between two possibilities for a warning label
german.stackexchange.com
10
Cultural context for "Abendland" and "Rettung" in this song lyric
german.stackexchange.com
10
Prove that tangent spaces, modeled as equivalence classes of curves, are vector spaces
math.stackexchange.com
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