Results 11 to 20 of about 60,869 (311)
Nonexistence of invariant measures [PDF]
Proceedings of the American Mathematical Society, 1983 Let G G be a group acting on a set X X . Suppose that for some positive integer r r , G G contains a free group F F of rank > r > r and the intersection of any stabilizer with F F has rank ⩽
David Promislow
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Nonexistence of asymptotic observables [PDF]
Proceedings of the American Mathematical Society, 1972 Strong asymptotic limits of all Heisenberg observables exist only for trivial Hamiltonians.
James S. Howland
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Nonexistence of Subcritical Solitary Waves [PDF]
Archive for Rational Mechanics and Analysis, 2021 AbstractWe prove the nonexistence of two-dimensional solitary gravity water waves with subcritical wave speeds and an arbitrary distribution of vorticity. This is a longstanding open problem, and even in the irrotational case there are only partial results relying on sign conditions or smallness assumptions.
Vladimir Kozlov +2 more
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Hyperbolic inequalities with a Hardy potential singular on the boundary of an annulus
AIMS Mathematics, 2023 We are concerned with the study of existence and nonexistence of weak solutions for a class of hyperbolic inequalities with a Hardy potential singular on the boundary $ \partial B_1 $ of the annulus $ A = \left\{x\in \mathbb{R}^3: 1 < |x|\leq 2\right\}
Ibtehal Alazman +3 more
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Sharp Contradiction for Local-Hidden-State Model in Quantum Steering [PDF]
, 2016 In quantum theory, no-go theorems are important as they rule out the existence of a particular physical model under consideration. For instance, the Greenberger-Horne-Zeilinger (GHZ) theorem serves as a no-go theorem for the nonexistence of local hidden ...
Chen, Jing-Ling +3 more
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On the nonexistence of a vacuum black lens [PDF]
Journal of High Energy Physics, 2021 Abstract We demonstrate that five-dimensional, asymptotically flat, stationary and bi-axisymmetric, vacuum black holes with lens space L(n, 1) topology, possessing the simplest rod structure, do not exist. In particular, we show that the general solution on the axes and horizon, which we recently constructed by exploiting the ...
Lucietti, James, Tomlinson, Fred
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A Time-Fractional Parabolic Inequality on a Bounded Interval
Mathematics, 2023 We study a time-fractional parabolic inequality posed on a bounded interval and involving a wight function W, where the fractional derivative is considered in the Caputo sense.
Amal Alshabanat +3 more
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Axioms, 2022 In this paper, we investigate the existence and nonexistence of positive solutions for a system of Riemann–Liouville fractional differential equations with r-Laplacian operators, subject to nonlocal uncoupled boundary conditions that contain Riemann ...
Alexandru Tudorache, Rodica Luca
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On nonexistence of similarity solutions
Journal of Mathematical Analysis and Applications, 1988 Consider the semilinear parabolic equation \[ (1)\quad u_ t=\Delta u- u^ p,\quad x\in R^ N,\quad t>0, \] where \(N\geq 1 ...
William C. Troy, Lambertus A. Peletier
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Electronic Journal of Qualitative Theory of Differential Equations, 2016 We study non-monotone positive solutions of the second-order linear differential equations: $(p(t)x')' + q(t) x = e(t)$, with positive $p(t)$ and $q(t)$. For the first time, some criteria as well as the existence and nonexistence of non-monotone positive
Mervan Pašić, Satoshi Tanaka
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