Results 11 to 20 of about 4,835,163 (282)

Degree formula for connective K-theory [PDF]

open access: yesInventiones mathematicae, 2009
We apply the degree formula for connective $K$-theory to study rational contractions of algebraic varieties. Examples include rationally connected varieties and complete intersections.
A. Ducros   +10 more
openaire   +5 more sources

Ninebrane structures [PDF]

open access: yes, 2015
String structures in degree four are associated with cancellation of anomalies of string theory in ten dimensions. Fivebrane structures in degree eight have recently been shown to be associated with cancellation of anomalies associated to the NS5-brane ...
Sati, Hisham
core   +1 more source

Ambrosetti–Prodi Alternative for Coupled and Independent Systems of Second-Order Differential Equations

open access: yesMathematics, 2023
This paper deals with two types of systems of second-order differential equations with parameters: coupled systems with the boundary conditions of the Sturm–Liouville type and classical systems with Dirichlet boundary conditions.
Feliz Minhós, Gracino Rodrigues
doaj   +1 more source

Shooting with degree theory: Analysis of some weighted poly-harmonic systems [PDF]

open access: yes, 2014
In this paper, the author establishes the existence of positive entire solutions to a general class of semilinear poly-harmonic systems, which includes equations and systems of the weighted Hardy--Littlewood--Sobolev type.
Villavert, John
core   +1 more source

Third-order differential equations with three-point boundary conditions

open access: yesOpen Mathematics, 2021
In this paper, a third-order ordinary differential equation coupled to three-point boundary conditions is considered. The related Green’s function changes its sign on the square of definition. Despite this, we are able to deduce the existence of positive
Cabada Alberto, Dimitrov Nikolay D.
doaj   +1 more source

Coping with Egypt's and Israel Normalisation Process: Gaza Strip Siege and Hamas Governance (Vol.12, Nº2, Thematic dossier)

open access: yesJanus.net, 2022
Over the last fourteen years, the Gaza Strip has been under a land, sea and air siege imposed by Israel and Egypt. Throughout these years, Palestinians from the Gaza Strip have endured three Israeli military operations inside a besieged territory and ...
João Pedro Borralho
doaj   +1 more source

Quantum, Gravity, and Geometry [PDF]

open access: yes, 2000
Recently, it is shown that, the quantum effects of matter are well described by the conformal degree of freedom of the space-time metric. On the other hand, it is a wellknown fact that according to Einstein's gravity theory, gravity and geometry are ...
Shojai, Ali
core   +2 more sources

Nielsen root theory and Hopf degree theory [PDF]

open access: yesPacific Journal of Mathematics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Brown, Robert F., Schirmer, Helga
openaire   +1 more source

Rights of Nature as a potential framework for the transformation of modern political communities (Vol.13, N.1)

open access: yesJanus.net, 2022
This article focuses on the present context of the climate and environmental crises and how these fundamentally challenge the inherently anthropocentric norms, conceptions and practices of international politics and IR.
Carlota Houart
doaj   +1 more source

Infinite time Turing machines and an application to the hierarchy of equivalence relations on the reals [PDF]

open access: yes, 2009
We describe the basic theory of infinite time Turing machines and some recent developments, including the infinite time degree theory, infinite time complexity theory, and infinite time computable model theory. We focus particularly on the application of
Coskey, Samuel, Hamkins, Joel David
core   +1 more source

Home - About - Disclaimer - Privacy