martini

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location Berlin, Germany
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488 Answers

newest activity votes
3
Find the length (in cm.) of the hypotenuse?
3
A real analysis question
3
Does this quantity have a name in information theory?
3
polynomial-torus
3
Definition : Pairwise disjoint bases
3
Writing $HK$ as the disjoint union of $xK$
2
Geometric sequence, finding the first term using only the sum, the number of terms and value of one term.
2
Working out integral of $\sin(nx)$ multiplied by its complex conjugate
2
Definition of product uniform space.
2
Approximating bounded operators in Hilbert space
2
The Differentiability of $f$ in $\mathbb R^2$
2
Differentiability and extrema - counterexamples for a few statements
2
Determinant of anti-diagonal permutation matrix
2
If $Lat(\mathcal{A})$ is trivial then $\mathcal{A}'$ consists of scalars.
2
Module Homomorphisms and a Direct Sum
2
Power set and equivalence relation
2
Positive polynomial in positive operator yields a positive operator?
2
How to prove this logic?
2
Finding a basis for the plane with the equation
2
Compare three functions
2
Show this function is convex.
2
Prove this map is linear:
2
Ideals with two inputs
2
$R\neq R[x]$ if $R$ be Noether ring
2
Show that X has density $f(x)$.
2
If $f: A \rightarrow B$ is injective, $\exists ! f^{-1}:f(A)\rightarrow A$ such that $f^{-1}f(x) = x$
2
The function $f_n(x) = n \sin(x/n)$
2
GCD using quantifiers - where did I make a mistke?
2
Proof of Convexity
2
Proof that a Zariski closed subset of a product of projective space is the common zeros of multihomogeneous polynomials
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