Results 11 to 20 of about 2,197 (146)

Watson's theorem and electromagnetism in K→ππ decay [PDF]

open access: yesPhysics Letters B, 2001
We consider what constraints unitarity and CPT invariance yield on the strong and electromagnetic phases entering K -> pi pi decay. In particular, we show that the relative size of the electromagnetically-induced changes in the I=0 and I=2 phase shifts in the two--pion final state do not depend on the explicit coupling to the pi^+ pi^- gamma channel ...
Gardner, S.   +2 more
openaire   +2 more sources

Weak kaon production off the nucleon and Watson's theorem

open access: yesPhysics Letters B, 2021
8 pages, 5 ...
Saúl-Sala, E.   +4 more
openaire   +4 more sources

Large deviations for i.i.d. replications of the total progeny of a Galton–Watson process

open access: yesModern Stochastics: Theory and Applications, 2017
The Galton–Watson process is the simplest example of a branching process. The relationship between the offspring distribution, and, when the extinction occurs almost surely, the distribution of the total progeny is well known.
Claudio Macci, Barbara Pacchiarotti
doaj   +1 more source

Fixed points via a generalized local commutativity

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
Let g:X→X. The concept of a semigroup of maps which is “nearly commutative at g” is introduced. We thereby obtain new fixed point theorems for functions with bounded orbit(s) which generalize a recent theorem by Huang and Hong, and results by Jachymski ...
Gerald F. Jungck
doaj   +1 more source

Extensions of Watson’s theorem and the Ramanujan–Guinand formula

open access: yesInternational Journal of Number Theory, 2022
Ramanujan provided several results involving the modified Bessel function [Formula: see text] in his Lost Notebook. One of them is the famous Ramanujan–Guinand formula, equivalent to the functional equation of the non-holomorphic Eisenstein series on SL[Formula: see text]. Recently, this formula was generalized by Dixit, Kesarwani, and Moll.
openaire   +2 more sources

Some limit theorems for the critical Galton–Watson branching processes

open access: yesUkrains’kyi Matematychnyi Zhurnal, 2023
UDC 519.21 We consider critical Galton–Watson processes starting from a random number of particles and determine the effect of the mean value of the initial state on the asymptotic state of the process. For processes starting from a large number of particles and satisfying the condition(S),we prove the limit theorem similar to the result of W.
Kudratov, Kh., Khusanbaev, Ya.
openaire   +2 more sources

Characterizations of Ideals in Intermediate C-Rings A(X) via the A-Compactifications of X

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2013
Let X be a completely regular topological space. An intermediate ring is a ring A(X) of continuous functions satisfying C*(X)⊆A(X)⊆C(X). In Redlin and Watson (1987) and in Panman et al. (2012), correspondences 𝒵A and ℨA are defined between ideals in A(X)
Joshua Sack, Saleem Watson
doaj   +1 more source

The motivational peculiarities of bribe-takers

open access: yesSHS Web of Conferences, 2018
Criminology (as the scientific study of criminal behaviour on the individual and social level) and psychology (as the science, which seeks to understand individuals and groups) pay special attention to motivation – a theoretical construction, used to ...
Krivins A.
doaj   +1 more source

On a rigidity result for Kolmogorov-type operators

open access: yesBruno Pini Mathematical Analysis Seminar
Let D be a bounded open subset of ℝN and let z0 be a point of D. Assume that the Newtonian potential of D is proportional outside D to the potential of a mass concentrated at z0. Then D is a Euclidean ball centred at z0. This theorem, proved by Aharonov,
Alessia E. Kogoj
doaj   +1 more source

Near-threshold pion production in diproton reactions with polarised beams and target at ANKE-COSY

open access: yesEPJ Web of Conferences, 2012
An extensive experimental study of near-threshold pion production in diproton reactions is underway at the ANKE-COSY spectrometer (Jülich). The programme is aimed at isolating the four-nucleon-pion contact interaction term appearing in the XPT expansions
Dymov S.
doaj   +1 more source

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