Results 31 to 40 of about 9,562 (223)

ON THE ARCHIMEDEAN CHARACTERIZATION OF PARABOLAS [PDF]

Bulletin of the Korean Mathematical Society, 2013
Archimedes knew that the area between a parabola and any chord $AB$ on the parabola is four thirds of the area of triangle $ΔABP$ where P is the point on the parabola at which the tangent is parallel to $AB$. We consider whether this property (and similar ones) characterizes parabolas. We present five conditions which are necessary and sufficient for a
Kim, Dong-Soo, Kim, Young Ho
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Towards Frustration in Eu(II) Archimedean Tessellations

, 2022
The solution self-assembly of trans-{EuI2} nodes and ditopic pyrazine or 4,4\u27-bipyridine leads to isoreticular 2D frameworks featuring the rare elongated triangular Archimedean tessellation pattern.
Andrei, Rogalev, Maja A., Dunstan, Giulia, Lorusso, David, Gracia, Mariusz, Kubus, Fabrice, Wilhelm, Mike S. B., Jørgensen, Anna S., Manvell, Søren, Kegnæs, Hua, Chen, Marco, Evangelisti, Kasper S., Pedersen   +11 more
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Condition pseudospectrum in non-Archimedean Banach spaces [PDF]

Journal of Mahani Mathematical Research
In this article, we introduce and study the condition pseudospectrum of bounded linear operator pencils on non-Archimedean Banach spaces. We obtain a characterization of the condition pseudospectrum of bounded linear operator pencils on non-Archimedean ...
Jawad Ettayb
doaj   +1 more source

Deep Archimedean Copulas

CoRR, 2020
A central problem in machine learning and statistics is to model joint densities of random variables from data. Copulas are joint cumulative distribution functions with uniform marginal distributions and are used to capture interdependencies in isolation from marginals.
Chun Kai Ling, Fei Fang 0001, J. Zico Kolter   +2 more
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Non-Archimedean Sendov’s Conjecture [PDF]

p-Adic Numbers, Ultrametric Analysis and Applications, 2022
We prove non-archimedean analogue of Sendov's conjecure. We also provide complete list of polynomials over an algebraically closed non-archimedean field $K$ that satisfy the optimal bound in the Sendov's conjecture.
Choi, Daebeom, Lee, Seewoo
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On topological classification of non-archimedean Fréchet spaces [PDF]

, 2000
summary:We prove that any infinite-dimensional non-archimedean Fréchet space $E$ is homeomorphic to $D^{\mathbb{N}}$ where $D$ is a discrete space with $\mathop {\mathrm card}(D)=\mathop {\mathrm dens}(E)$.
Śliwa, Wiesław, Wiesa̵w Śliwa, Śliwa, Wiesa̵w   +2 more
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Estimation of Tail Value at Risk for Bivariate Portfolio using Gumbel Copula

JTAM (Jurnal Teori dan Aplikasi Matematika)
Investing in the stock market involves complex risks, especially under extreme and unpredictable conditions. While Value at Risk (VaR) is a widely used risk measure, it has limitations in capturing tail-end risks.
Fransiska Fransiska, Evy Sulistianingsih, Neva Satyahadewi   +2 more
doaj   +1 more source

The potential for additive manufacturing of compact horizontal spiral tube condensers [PDF]

MATEC Web of Conferences
Research on heat transfer and pressure drop in Archimedean spiral coil heat exchangers is limited, with little focus on condensation applications and flow hydrodynamics.
Steenekamp Nicolaas, Jacobs Gys
doaj   +1 more source

Nearly Ring Homomorphisms and Nearly Ring Derivations on Non-Archimedean Banach Algebras

Abstract and Applied Analysis, 2010
We prove the generalized Hyers-Ulam stability of homomorphisms and derivations on non-Archimedean Banach algebras. Moreover, we prove the superstability of homomorphisms on unital non-Archimedean Banach algebras and we investigate the superstability of ...
Madjid Eshaghi Gordji
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Archimedean ice

Discrete and Continuous Dynamical Systems, 2013
20 pages, 6 figures (last page pics may take a bit time to upload)
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