k.stm

I'm a graduate student of mathematics in Germany.

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Mathematical education by country

undergraduate-education curriculum asked May 7, 2014 at 18:44

matheducators.stackexchange.com

24 votes

How to interpret material conditional and explain it to freshmen?

logic soft-question philosophy asked Nov 7, 2012 at 18:29

math.stackexchange.com

18 votes

Status quo of category theory and monads in theoretical computer science research?

reference-request pl.programming-languages big-picture ct.category-theory monad asked Nov 13, 2015 at 7:16

cstheory.stackexchange.com

16 votes

Taylor expansion of $(1+x)^α$ to binomial series – why does the remainder term converge?

calculus real-analysis power-series taylor-expansion asked May 26, 2013 at 15:05

math.stackexchange.com

15 votes

Embeddings $A → B → A$, but $A \not\cong B$?

abstract-algebra modules universal-algebra asked May 20, 2014 at 20:16

math.stackexchange.com

15 votes

Use of Konjunktiv II: Why "Ich wünschte", not "ich wünsche"? Compare "I wish" in English!

grammar phrases subjunctive asked Oct 4, 2012 at 21:00

german.stackexchange.com

14 votes

Was Pólya’s “How To Solve It” originally written in German or English (or some other language)?

mathematics biographical-details mathematicians publishing asked Feb 24, 2015 at 17:17

hsm.stackexchange.com

13 votes

How is “hue hue” actually pronounced in (Brazilian) Portuguese?

pronúncia asked Mar 3, 2016 at 16:17

portuguese.stackexchange.com

12 votes

Examples of context-free languages with a non-context-free complements

formal-languages context-free asked Dec 4, 2013 at 13:58

cs.stackexchange.com

12 votes

Are the polynomial functions on $S^1$ dense in $C(S^1,ℂ)$?

functional-analysis asked Dec 14, 2014 at 16:08

math.stackexchange.com

Top Answers

143

Proof of triangle inequality

math.stackexchange.com

Meaning of the backslash operator on sets

math.stackexchange.com

How to prove the continuity of the metric function?

math.stackexchange.com

If Gal(K,Q) is abelian then |Gal(K,Q)|=n

math.stackexchange.com

Example of a non-splitting exact sequence $0 → M → M\oplus N → N → 0$

math.stackexchange.com

Is every element in a set also an element of the powerset?

math.stackexchange.com

$K$ is a splitting field $\iff$ any irreducible polynomial with a root in $K$ splits completely over $K$.

math.stackexchange.com

What is the rule for something divided by itself equaling 1?

math.stackexchange.com

Method of finding a p-adic expansion to a rational number

math.stackexchange.com

Unterschied zwischen "eigentlich" und "tatsächlich"

german.stackexchange.com

Is product of two closed sets closed?

math.stackexchange.com

Was ist die Bedeutung des Wortes "Mail"?

german.stackexchange.com

Why is “or” (in logic) sometimes equivalent to “and” (in natural language)?

math.stackexchange.com

From any ten naturals, find some numbers whose sum is divisible by $ 10.$

math.stackexchange.com

Prove that G\S generates G

math.stackexchange.com

How to show $\mathbf{Q} $ is not free

math.stackexchange.com

Suggestions for good notation

mathoverflow.net

Is an automorphism a function or a group?

math.stackexchange.com

Category of sets, $\mathrm{I}_{\emptyset}$

math.stackexchange.com

Understanding $\mathbb{C} \otimes_{\mathbb{Q}} \mathbb{C}$

math.stackexchange.com

Solve $\dfrac{1}{1+\frac{1}{1+\ddots}}$

math.stackexchange.com

Show that $f$ cannot have infinitely many zeroes in $[0, 1]$.

math.stackexchange.com

How to find the fixed field for Galois group?

math.stackexchange.com

$f^2$ and $f^3$ are holomorphic implies $f$ is holomorphic.

math.stackexchange.com

Creating surjective holomorphic map from unit disc to $\mathbb{C}$?

math.stackexchange.com

Let $G$ be a group and $A\subseteq G$. Showing $\{g\in G: gag^{-1}\in A \text{ for all } a\in A\}$ does not have to be a subgroup of $G$.

math.stackexchange.com

Why is $G/ \ker f$ abelian?

math.stackexchange.com

How come the $\epsilon-\delta$ definition of continuity is preferred over the sequential definition of continuity?

math.stackexchange.com

Every group is solvable, fake proof.

math.stackexchange.com

If two continuous maps into a Hausdorff space agree on a dense subset, they are identically equal

math.stackexchange.com