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I'm a student of mathematics in Germany.


Jun
29
asked Is there anything behind the “$m + N$” notation for elements in the factor structure $M/N$?
May
31
answered If number of homomorphisms from $G \mapsto H$ is $n$. How many homomorphisms are there from $G \oplus G\cdot\cdot \cdot \oplus~ G ( s $ times) to $H$
May
20
asked Embeddings $A → B → A$, but $A \not\cong B$?
May
6
answered $f^2$ and $f^3$ are holomorphic implies $f$ is holomorphic.
May
3
answered If $g$ is discontinuous and $fg$ is continuous then $f$ is continuous
May
1
answered Equivalent characterizations of group objects
May
1
asked Equivalent characterizations of group objects
Apr
30
answered Suppose $z \neq -1$ is a complex number of norm 1. Prove that $(\frac{1+z}{|1+z|})^2 =z $
Apr
27
answered Irreducibility over $ \mathbb{Q} ( \sqrt{2} , \sqrt{3})$
Apr
25
answered Classification of semidirect products
Apr
23
answered Ring Properties
Apr
18
answered Classical geometry statement in modern terminology
Apr
11
answered Finding the CFG (Context Free Grammar) of a language
Apr
10
asked How could I have found the closed form of $\sum_{k=1}^n \frac{k}{(k+1)!}$ in advance?
Apr
8
answered Prove that $f$ is constant if $f'=0$
Apr
8
answered Continuity of the sum of continuous functions
Apr
6
answered Vectorspace subspace proof
Apr
5
answered Proving that if $a,b > 1$, then $5^a - 3^b=16$ has only one solution with $a=2$ and $b=2$
Apr
4
answered Fibonacci Sequence, Golden Ratio
Apr
3
answered Finite Field Homomorphism