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1028
bio website jungenschaft-hohenstaufen.de
location Berlin, Germany
age 32
visits member for 1 year, 8 months
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Sep
30
suggested suggested edit on total number of $n$-cycle
Sep
29
answered liminf sequence of C-infty functions
Sep
21
awarded  Commentator
Sep
21
comment A sequence which is not comparable to polynomials
Just mix a sequence like $(\log n)$ with a sequence like $(n!)$ to get what you are looking for.
Sep
21
comment How is that three-place logic operator called?
Bool.hs for all of you who want to read the definition he mentioned. By the definition of if' there you can see that it is, as @Rahul guessed - the conditional operator with arguments in funny order ...
Sep
21
comment Proving a Theorem based on Gerschgorin Theorem
What is $p(A)$, did you mean the spectral radius $\rho(A)$? In that case perhaps it is helpful to you that your right hand side is the norm of $A$ induced by the maximum norm on $\mathbb R^n$.
Sep
20
comment Let $\phi,\psi: Y \rightarrow X$ be two morphisms between prevarieties. Prove that $\{ y \in Y| \phi(y)=\psi(y) \}$ is locally closed in $Y$
Typo? If $\phi, \psi: X \to Y$ the map $f$ as written above isn't defined ... it should be $\phi, \psi\colon Y \to X$.
Sep
17
revised Solving the equation $3^{5x-2}=8^{8x-9}$
TeXification
Sep
17
suggested suggested edit on Solving the equation $3^{5x-2}=8^{8x-9}$
Sep
17
comment Solving the equation $3^{5x-2}=8^{8x-9}$
Is this homework? What laws for lograithms do you know? For the formatting: Use curly brackets for exponents ...
Sep
17
revised Solving the equation $3^{5x-2}=8^{8x-9}$
corrected the formatting of the exponents.
Sep
17
suggested suggested edit on Solving the equation $3^{5x-2}=8^{8x-9}$
Sep
12
answered Definition : Pairwise disjoint bases
Sep
12
comment Fatou's Lemma and Almost Sure Convergence (Pt. 1)
In Fatou's Lemma it is sufficient to have $X = \liminf_{n\to\infty} X_n$ a. s.
Sep
10
answered Basis for a vector space
Sep
10
comment Basis for a vector space
I will do so ...
Sep
10
comment Basis for a vector space
Yes. In a vector space with a finite Basis, each linear independent set with the same number of elements is also a basis. See for example en.wikipedia.org/wiki/Steinitz_exchange_lemma
Sep
10
comment Proof that $\ln(n^2)(\ln(n) - 1) < n$ for all $n\in\mathbb{N}$
Hm ... perhaps it's useful to know that $\log(n^2) = 2\log n$.
Sep
10
comment Taylor's theorem in Banach spaces
For given $x, h \in X$ apply the one-dimensional case to $t \mapsto f(x+th)$ and use the chain rule.
Sep
8
answered Rearrangements of a conditionally convergent series