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Q&A for professional mathematicians
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Let $A$ be a $C^*$-algebra and $(a_{ij}) \in M_n(A)$ be a positive matrix. Does there exist a constant $C \ge 0$ (not depending on the $a_{ij}$) such that $$\lVert(a_{ij})\rVert \le C \Bigl\lVert\s...
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Hottest Questions Today - MathOverflow
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Mathoverflow.net news digest
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0 days
Is this proof of the Balazard Saias Yor criterion correct? [closed]
$� = \int_{-\infty}^{\infty} \frac{\log|\zeta(½ + i t)|}{¼ + t²} , dt$.
$\log|\zeta(½ + i t)| = \Re \log \zeta(½ + i t)$,
$� = \Re \int_{-\infty}^{\infty} \frac{\log \zeta(½ + i t)}{¼ + t²} , dt$. -
4 days
Is this circular reasoning? I evaluated an integral from: https://mathoverflow.n...
For real t,
$∫₁/₂^∞ log|ζ(σ + i t)| dσ = ½ log π − ¼ log(t² + ¼) − ½ Re[Γ'/Γ(¼ + i t / 2)]$
This comes from Littlewood’s lemma and the functional equation (Titchmarsh, The Theory of the Riemann Zeta-Function, 2nd ed., Thm 9.6(A), pp. 214–218; Balazard–Saias–Yor, Adv. Math. 143, 1999, Lemma 1, p. 287).... -
3 years
graphs where every cycle is a sum of triangles
I am studying a special kind of graphs, and I would like to know if they are studied in the literature and what they are called.Let $G$ be a simple, finite, undirected, connected graph, with vertex set $V$ and edge set $E$.Consider the $\mathbb R$-vector...
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7 years
Firstly, a definition:
A convex polyhedron, whose faces are regular polygons (2D polytopes).
This includes the 92 Johnson solids, 13 Archimedean solids, 5 Platonic solids and two infinite familes - prisms and antiprisms.
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