搜索结果: 1-15 共查到“数学 A RESULT”相关记录30条 . 查询时间(0.068 秒)
A regularity result for the singular values of a transfer matrix and a quadratically convergent algorithm for computing its L_infinity-norm
Matrix and singular value differentiable function frequency singular value lipschitz second derivative
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2015/8/12
The ith singular value of a transfer matrix need not be a differentiable function of frequency where its multiplicity is greater than one. We show that near a local maximum, however, the largest singu...
A local mountain pass type result for a system of nonlinear Schrodinger equations
local mountain pass type nonlinear Schrodinger equations
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2015/4/3
A local mountain pass type result for a system of nonlinear Schrodinger equations.
A RESULT ON RICCI CURVATURE AND THE SECOND BETTI NUMBER
A RESULT RICCI CURVATURE THE SECOND BETTI NUMBER
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2018/4/19
We prove that the second Betti number of a compact Riemannian manifoldvanishes under certain Ricci curved restriction.
A New Stability Result for the Feedback Interconnection of Negative Imaginary Systems with a Pole at the Origin
Feedback Interconnection Negative Imaginary Systems Pole Origin
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2011/9/16
Abstract: This paper is concerned with stability conditions for the positive feedback interconnection of negative imaginary systems. A generalization of the negative imaginary lemma is derived, which ...
Frobenius' result on simple groups of order (p^3-p)/2
Frobenius' result Group Theory
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2011/9/15
Abstract: The complete list of pairs of non-isomorphic finite simple groups having the same order is well-known. In particular for p>3, PSL_2(Z/p) is the "only" simple group of order (p^3-p)/2. It's l...
Lower bounds for volumes of nodal sets: an improvement of a result of Sogge-Zelditch
Lower bounds volumes of nodal sets Sogge-Zelditch
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2011/8/22
Abstract: We use the Dong-Sogge-Zelditch formula to obtain a lower bound for the volume of the nodal sets of eigenfunctions. Our result improves the recent results of Sogge-Zelditch and in dimensions ...
On tight Euclidean $6$-designs: an experimental result
Euclidean designs spherical designs tight designs distance sets
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2011/1/19
A finite set X n with a weight function w : X 0 is called Euclidean t-design in n (supported by p concentric spheres) if the following condition ho...
A result in the Ho and Lee's model
result Ho Lee's model
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2010/9/20
A result in the Ho and Lee's model.
A symmetry result on Reinhardt domains
Reinhardt domains math
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2010/11/23
We show the following symmetry property of a bounded Reinhardt domain $\Omega$ in $\mathbb{C}^{n+1}$: let $M=\partial\Omega$ be the smooth boundary of $\Omega$ and let $h$ be the Second Fundamental F...
A symmetry result on submanifolds of space forms and Applications
submanifolds space forms Applications
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2010/11/11
In this paper we prove a symmetry result on submanifolds of codimension one in a n + 1-dimensional space form, related to the geodesic distance function and to the normal curvature of some fixed vect...
A finite time blowup result for quadratic ODE's
blowup quadratic ODE's
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2010/11/9
This short paper is dedicated to Mauricio Peixoto who abstracted the practical theory of ODE's and to David Rand who applied the subsequent powerful abstract theory to practical problems.
A paradox of altruism: How caring about future generations can result in poverty for everyone （game-theoretic analysis）
Nash bargaining solution
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2010/9/13
Political and social activists are rightfully concerned about future generations: whenever a country borrows money, or an environmental situation worsens, this means, in effect, that we impose an addi...
A compactness result for Landau state in thin-film micromagnetics
compactness singular perturbation vortex N´ eel wall micromagnetics
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2010/12/1
We deal with a nonconvex and nonlocal variational problem coming from thin-film micro-magnetics. It consists in a free-energy functional depending on two small parameters " and
and defined over vec...
A result of Lemmermeyer on class numbers
Lemmermeyer class numbers
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2010/12/9
I present Franz Lemmermeyer’s proof that if p is a prime ≡ 9 (16) then the class number of Qp 1 4 is ≡ 2 (4).
A universality result for endomorphism monoids of some ultrahomogeneous structures
endomorphism monoid Fra¨ı ss´ e limit pushout
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2010/12/7
We devise a fairly general sufficient condition ensuring that the endomorphism monoid of a countably infinite ultrahomogeneous structure (i.e. a Fra¨ıss´e limit) embeds all countable semigr...