Results 21 to 30 of about 2,087 (80)

Ricci-flat Metrics with U(1) Action and the Dirichlet Boundary-value Problem in Riemannian Quantum Gravity and Isoperimetric Inequalities [PDF]

open access: yes, 2003
The Dirichlet boundary-value problem and isoperimetric inequalities for positive definite regular solutions of the vacuum Einstein equations are studied in arbitrary dimensions for the class of metrics with boundaries admitting a U(1) action.
Akbar M M   +29 more
core   +2 more sources

Some identities on derangement and degenerate derangement polynomials

open access: yes, 2017
In combinatorics, a derangement is a permutation that has no fixed points. The number of derangements of an n-element set is called the n-th derangement number.
AM Garsia   +14 more
core   +1 more source

Degenerate Fubini-type polynomials associated with degenerate Apostol-Bernoulli and Apostol-Euler polynomials of order α

open access: yes, 2021
In this paper, by introducing the degenerate Fubini-type polynomials, we give several relations with the help of the Faà di Bruno formula and some properties of Bell polynomials, and generating function methods. Also, we derive some new explicit formulas and recurrence relations for Fubini-type polynomials and numbers. Associating the degenerate Fubini-
openaire   +2 more sources

On A New Type of Degenerate Poly-Fubini Numbers and Polynomials

open access: yes, 2020
In this paper, we introduce a new type of degenerate poly-Fubini polynomials and numbers, are called degenerate poly-Fubini polynomials and numbers, by using the degenerate polylogarithm function and derive several properties on the degenerate poly-Fubini polynomials and numbers.
openaire   +4 more sources

A Note on Degenerate Hermite-Fubini Numbers and Polynomials

open access: yes, 2019
In this paper, we introduce a new class of degenerate Hermite-Fubini numbers and polynomials and investigate some properties of these polynomials. We establish summation formulas of these polynomials by summation techniques series. Furthermore, we derive symmetric identities of degenerate Hermite-Fubini numbers and polynomials by using generating ...
Waseem A. Khan   +2 more
openaire   +2 more sources

Positivity conditions for Hermitian symmetric functions

open access: yes, 2003
We introduce a countable collection of positivity classes for Hermitian symmetric functions on a complex manifold, and establish their basic properties. We study a related notion of stability. The first main result shows that, if the underlying matrix of
D'Angelo, John P., Varolin, Dror
core   +2 more sources

Geometry of spin coherent states

open access: yes, 2017
Spin states of maximal projection along some direction in space are called (spin) coherent, and are, in many aspects, the "most classical" available. For any spin $s$, the spin coherent states form a 2-sphere in the projective Hilbert space $\mathbb{P ...
Chryssomalakos, Chryssomalis   +2 more
core   +1 more source

Non-abelian vortices on CP^1 and Grassmannians [PDF]

open access: yes, 2013
Many properties of the moduli space of abelian vortices on a compact Riemann surface are known. For non-abelian vortices the moduli space is less well understood. Here we consider non-abelian vortices on the Riemann sphere CP^1, and we study their moduli
Rink, Norman A.
core   +1 more source

Fluctuations about the Fubini-Lipatov instanton for false vacuum decay in classically scale invariant models [PDF]

open access: yes, 2018
For a scalar theory whose classical scale invariance is broken by quantum effects, we compute self-consistent bounce solutions and Green's functions.
A. A. Aleinikov   +4 more
core   +4 more sources

Two‐Round Ramsey Games on Random Graphs

open access: yesRandom Structures &Algorithms, Volume 68, Issue 3, May 2026.
ABSTRACT Motivated by the investigation of sharpness of thresholds for Ramsey properties in random graphs, Friedgut, Kohayakawa, Rödl, Ruciński and Tetali introduced two variants of a single‐player game whose goal is to colour the edges of a random graph, in an online fashion, so as not to create a monochromatic triangle.
Yahav Alon   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy