Results 81 to 90 of about 450,232 (306)

Critical analysis of the theory of movement in movement in Allameh Tabatabai's view point [PDF]

open access: yesتاریخ فلسفه اسلامی
Sadr al-Matahin proposed the movement in the category of substance by proposing the theory of substance movement. But he, like other philosophers, did not accept the movement in other categories, especially in categories whose individuals are gradually ...
Abdollah Nasri, Zeynab Yousofzadeh
doaj   +1 more source

The de Haas van Alphen effect near a quantum critical end point in Sr₃Ru₂O₇

open access: yes, 2009
Highly correlated electron materials are systems in which many new states of matter can emerge. A particular situation which favours the formation of exotic phases of the electron liquid in complex materials is that where a quantum critical point (QCP ...
Mercure, Jean-Francois
core  

Critical exponents of the pair contact process with diffusion

open access: yes, 2012
We study the pair contact process with diffusion (PCPD) using Monte Carlo simulations, and concentrate on the decay of the particle density ρ with time, near its critical point, which is assumed to follow ρ(t) ct− +c2t− 2+. . ...
Schram, R.D.   +3 more
core   +1 more source

Fermionic quantum critical point of spinless fermions on a honeycomb lattice [PDF]

open access: yes, 2014
Spinless fermions on a honeycomb lattice provide a minimal realization of lattice Dirac fermions. Repulsive interactions between nearest neighbors drive a quantum phase transition from a Dirac semimetal to a charge-density-wave state through a fermionic ...
Troyer, M., Corboz, P., Wang, L.
core   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch   +13 more
wiley   +1 more source

Heteroclinic orbits of a second order nonlinear difference equation

open access: yesElectronic Journal of Differential Equations, 2017
This article concerns a second-order nonlinear difference equation. By using critical point theory, the existence of two heteroclinic orbits is obtained. The main method used is variational.
Haiping Shi, Xia Liu, Tao Zhou
doaj  

Critical Point Theory for Indefinite Functionals with Symmetries

open access: yesJournal of Functional Analysis, 1996
Let \(X\) be a Hilbert space and \(G\) a compact Lie group acting orthogonally on \(X\). Let \(\phi \in C^1(X,\mathbb{R})\) be a strongly indefinite functional, invariant with respect to the action of \(G\). In order to find critical points of \(\phi\), the authors introduce an equivariant version of the limit relative category of \textit{G.
Bartsch, Thomas, Clapp, Mónica
openaire   +2 more sources

Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma

open access: yesMolecular Oncology, EarlyView.
The causes of central nervous system (CNS) hemangioblastoma in Von Hippel–Lindau (vHL) disease are unclear. We used Whole Exome Sequencing (WES) on familial hemangioblastoma to investigate events that underlie tumor development. Our findings suggest that VHL loss creates a permissive environment for tumor formation, while additional alterations ...
Maja Dembic   +5 more
wiley   +1 more source

A modified zero energy critical point theory with applications to several nonlocal problems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
In this paper, we devote ourselves to considering a modified zero energy critical point theory for a specific set of functionals denoted as $\Phi_{\mu}$, defined within the confines of a uniformly convex Banach space.
Xinzhong Liang, Binlin Zhang
doaj   +1 more source

Some remarks on the critical point theory

open access: yes, 2007
In this paper we discuss some problems about critical point theory. In the first part of the paper we study existence and multiplicity results of semilinear second order elliptic equation: $$ \begin{cases} -\Delta u=f(x,u) &\text{for } x\in \Omega, \\ u ...
Li, Chong
core  

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