Zobrazeno 1 - 10
of 410
pro vyhledávání: '"Evans, W D"'
Autor:
Brown, B. M., Evans, W. D.
The self-adjoint and $m$-sectorial extensions of coercive Sturm-Liouville operators are characterised, under minimal smoothness conditions on the coefficients of the differential expression.
Comment: accepted by IEOT, in IEOT 2016
Comment: accepted by IEOT, in IEOT 2016
Externí odkaz:
http://arxiv.org/abs/1604.03170
In this paper we investigate spectral properties of Lapla- cians on Rooms and Passages domains. In the first part, we use Dirichlet- Neumann bracketing techniques to show that for the Neumann Lapla- cian in certain Rooms and Passages domains the seco
Externí odkaz:
http://arxiv.org/abs/1301.4396
Dirac-Sobolev and Dirac-Hardy inequalities in $L^1$ are established in which the $L^p$ spaces which feature in the classical Sobolev and Hardy inequalities are replaced by weak $L^p$ spaces. Counter examples to the analogues of the classical inequali
Externí odkaz:
http://arxiv.org/abs/1101.3129
A Hardy inequality of the form \[\int_{\tilde{\Omega}} |\nabla f({\bf{x}})|^p d {\bf{x}} \ge (\frac{p-1}{p})^p \int_{\tilde{\Omega}} \{1 + a(\delta, \partial \tilde{\Omega})(\x)\}\frac{|f({\bf{x}})|^p}{\delta({\bf{x}})^p} d{\bf{x}}, \] for all $f \in
Externí odkaz:
http://arxiv.org/abs/1101.2331
Autor:
Andrade, E. L., Evans, W. D., Barrett, N. D., Cleary, S. D., Edberg, M. C., Alvayero, R. D., Kierstead, E. C., Beltran, A.
Publikováno v:
Health Education Research, 2018 Apr 01. 33(2), 125-144.
Externí odkaz:
https://www.jstor.org/stable/48509828
The paper analyses the decay of any zero modes that might exist for a massless Dirac operator $H:= \ba \cdot (1/i) \bgrad + Q, $ where $Q$ is $4 \times 4$-matrix-valued and of order $O(|\x|^{-1})$ at infinity. The approach is based on inversion with
Externí odkaz:
http://arxiv.org/abs/0712.2051
The main result includes features of a Hardy-type inequality and an inequality of either Sobolev or Gagliardo-Nirenberg type. It is inspired by the method of proof of a recent improved Sobolev inequality derived by M. Ledoux which brings out the conn
Externí odkaz:
http://arxiv.org/abs/0710.3936
Autor:
Evans, W. D., Solomyak, M.
In the model suggested by Smilansky one studies an operator describing the interaction between a quantum graph and a system of K one-dimensional oscillators attached at different points of the graph. This paper is a continuation of our investigation
Externí odkaz:
http://arxiv.org/abs/math/0505383