Results 31 to 40 of about 235,737 (191)

Are physiological oscillations physiological?

The Journal of Physiology, EarlyView., 2023
Abstract figure legend Mechanisms and functions of physiological oscillations. Abstract Despite widespread and striking examples of physiological oscillations, their functional role is often unclear. Even glycolysis, the paradigm example of oscillatory biochemistry, has seen questions about its oscillatory function.
Lingyun (Ivy) Xiong, Alan Garfinkel
wiley   +1 more source

Graphs and projective plaines in 3-manifolds

International Journal of Mathematics and Mathematical Sciences, 1986
Proper homotopy equivalent compact P2-irreducible and sufficiently large 3-manifolds are homemorphic. The result is not known for irreducible 3-manifolds that contain 2-sided projective planes, even if one assumes the Poincaré conjecture.
Wolfgang Heil, Seiya Negami
doaj   +1 more source

Foundations for Relativistic Quantum Theory I: Feynman's Operator Calculus and the Dyson Conjectures [PDF]

, 2002
In this paper, we provide a representation theory for the Feynman operator calculus. This allows us to solve the general initial-value problem and construct the Dyson series.
Araki H., Dahmen H. D., Doob J. L., Feynman R. P., Gill T. L., Gill T. L., Heisenberg W., Heisenberg W., Hurst C. A., Johnson G. W., Johnson G. W., Kurzweil J., Lowenstein J., Mills R. L., Miranker W. L., Oppenheimer J. R., Ornstein L. S., Petermann A., Segal I. E., Sokal A. D., Tang T., Thirring W., Tomonaga S., von Neumann J., Ward J., Wightman A. S., Wightman A. S.   +26 more
core   +1 more source

Massive AdS supergravitons and holography

Journal of High Energy Physics, 2019
I compare two holographic mechanisms giving to the graviton a parametrically-small supersymmetric mass m g in Anti-de Sitter spacetime. In the context of bimetric gravity these mechanisms couple ‘weakly’ two initially decoupled superconformal theories by:
Constantin Bachas
doaj   +1 more source

Gradient integrability and rigidity results for two-phase conductivities in two dimensions [PDF]

, 2014
This paper deals with higher gradient integrability for σ-harmonic functions u with discontinuous coefficients σ, i.e. weak solutions of div(σ∇u)=0 in dimension two.
Nesi, Vincenzo, Palombaro, Mariapia, Ponsiglione, Marcello   +2 more
core   +1 more source

Hipóteses e interpretação experimental: a conjetura de poincaré e a descoberta da hiperfosforescência por Becquerel e Thompson Hypothesis and experimental interpretation: Poincaré's conjecture and the discovery of hyperphosphorescence by Becquerel and Thompson

Ciência & Educação, 2004
Este trabalho descreve as pesquisas realizadas por Henri Becquerel e por Silvanus Thompson, em 1897, que são normalmente descritas como representando a descoberta da radioatividade.
Roberto de Andrade Martins
doaj   +1 more source

Flux de Hamilton-Ricci en varietats tridimensionals [PDF]

, 2007
Expliquem els treballs de Perelman, que ha resolt la conjectura de Thurston, i en particular la conjectura de Poincaré, mitjançant el flux de la curvatura de Ricci introduït per Hamilton.Here we explain the work of Perelman, who solved Thurston’s ...
Porti, Joan
core  

Conjecture on Hidden Superconformal Symmetry of N=4 Supergravity

, 2012
We argue that the observed UV finiteness of the 3-loop extended supergravities may be a manifestation of a hidden local superconformal symmetry of supergravity. We focus on the SU(2,2|4) dimensionless superconformal model.
A. Van Proeyen, Antoine Van Proeyen, B. de Wit, D. Z. Freedman, E. Bergshoeff, G. ’t Hooft, R. E. Kallosh, R. E. Kallosh, Renata Kallosh, Sergio Ferrara   +9 more
core   +1 more source

Experimental Test of the Three‐Setting Clauser–Horne–Shimony–Holt Inequality with Nonmaximally Orbital Angular Momentum Entangled States

Advanced Photonics Research, EarlyView.
Herein, the maximum violation of the three‐setting Clauser–Horne–Shimony–Holt (CHSH) inequality using nonmaximally entangled photons with orbital angular momentum is demonstrated. By mapping the optimization problem to maximizing a triangle's perimeter inscribed in an ellipse, the experiment validates the geometric approach and highlights the ...
Dongkai Zhang, Xiaodong Qiu, Lixiang Chen   +2 more
wiley   +1 more source

Searching for ribbons with machine learning

Machine Learning: Science and Technology
We apply Bayesian optimization and reinforcement learning to a problem in topology: the question of when a knot bounds a ribbon disk. This question is relevant in an approach to disproving the four-dimensional smooth Poincaré conjecture; using our ...
Sergei Gukov, James Halverson, Ciprian Manolescu, Fabian Ruehle   +3 more
doaj   +1 more source