Hagen von Eitzen

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location Bonn, Germany
age 47
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seen 2 hours ago
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I did study math and had a knack for it, but I am sooo out of that business now ...


1,747 Answers

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1
Polynomial division in $\mathbb{Z}[x]$.
1
Order of this group
1
Bounded Variation is Bounded
1
Examine the continuity and differentiability of $f(x)=| \cos x|$
1
$xy= z^2$ and $x, y$ are individual squares
1
Series Expansion of Exponential Function is Cauchy
1
Proving that a limit exists
1
Information content associated with an outcome
1
characterization of costant functions in $\mathbb{C}$
1
Isometry, compact space, there exists only one isometry other than identity
1
dividing planar regions into congruent parts
1
Proof of Cancellation law for type semi-group of a Group action
1
Let $A, B$ be closed subsets of $S^1$ such that $S^1 = A \cup B$. Prove that at least one of $A$ and $B$ contains a pair of mutually antipodal points.
1
Inverse of matrix sum, special case: $(A + x I)$
1
Every nonidentity element in a free group $F$ has infinite order
1
limit, low or high bound, convergence for recursive sequence
1
GCD and LCM using Prime Factorization
1
What does it mean that a number exists?
1
Induction on the Fibonacci sequence?
1
Decimal Floating Point to Shortest Binary
1
Probability of first success.
1
Additive maps modulo $1$ - what do they look like?
1
Series with exponential growth rate, ratio test is subordinate to the root test.
1
A new prime divides $a^p+1$
1
Show $(\mathbb{C}^*,\cdot,1) \cong (\mathbf{T},\cdot,1)\times (\mathbb{R}_{>0},\cdot,1)$ where $\mathbf{T} = \{a+bi \in \mathbb{C}|a^2+b^2=1\}$.
1
Matrix being not diagonalizable in F2
1
Quick question about proofs of theorem concerning Jordan basis
1
Does $\lim\limits_{n\to\infty} \sum\limits_{r=0}^{\lfloor\frac{n}{2}\rfloor}\frac{1}{n}f(\frac{r}{n})$ imply $\int\limits_{0}^{\frac{1}{2}}f(x)dx$?
1
Laplace Transformations of a piecewise function
1
What is the proof that anti-derivative gives function = area under curve?
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