Results 71 to 80 of about 5,150,775 (195)

Subharmonic spectroscopy of ultrasound contrast agents

open access: yes, 2010
We have investigated the subharmonic vibration of BR14 (Bracco Research S.A., Geneva, Switzerland) contrast agent microbubbles between 8-11 MHz. The response of the bubbles is recorded optically with the ultrafast recording camera (Brandaris 128) at ...
Michel Versluis   +9 more
core   +1 more source

Integral mean of Green’s potentials and their conjugate

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
The best possible estimates for Lebesgue integral means $m_q(r,F); (1le q
Vasyl'kiv, Ya. V., Kravec, M. Ya.
doaj   +3 more sources

Subharmonic-response computation and stability analysis for a nonlinear oscillator using a split-frequency harmonic balance method

open access: yes, 2006
A split-frequency harmonic balance method (SF-HBM) is developed to obtain subharmonic responses of a nonlinear single-degree-of-freedom oscillator driven by periodic excitation.
Julian Dunne (4460377)
core  

A simple proof of the Radó and Král theorems on removability of the zero locus for analytic and harmonic functions

open access: yesДоповiдi Нацiональної академiї наук України
A unified approach to the proof of the Radó and Král theorems on removability of the zero locus for analytic and harmonic functions is proposed.
A.V. Pokrovskii
doaj   +1 more source

Integrability of superharmonic functions and subharmonic functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
We apply the coarea formula to obtain integrability of superharmonic functions and nonintegrability of subharmonic functions. The results involve the Green function. For a certain domain, say Lipschitz domain, we estimate the Green function and restate the results in terms of the distance from the boundary.
openaire   +1 more source

Subextension and approximation of $m$-subharmonic functions with given boundary values [PDF]

open access: yes, 2023
In this paper we establish a result on subextension of $m$-subharmonic functions in the class $\mathcal{F}_m(\Omega,f)$ without changing the hessian measures.
Amal, Hichame, Gasmi, Ayoub El
core  

A Symmetrical Property of the Spectral Trace in Banach Algebras

open access: yesExtracta Mathematicae, 2017
Our aim in this paper is to extend a symmetrical property of the trace by M. Kennedy and H. Radjavi for bounded operators on a Banach space to the more general situation of Banach algebras. The main ingredients are Vesentini’s result on subharmonicity of
Abdelaziz Maouche
doaj  

Subharmonic functions in sub-Riemannian settings [PDF]

open access: yes, 2013
In this paper we furnish mean value characterizations for subharmonic functions related to linear second order partial differential operators with nonnegative characteristic form, possessing a well-behaved fundamental solution 0.
LANCONELLI, ERMANNO, BONFIGLIOLI, ANDREA
core   +1 more source

Hessian measures in the class of m-convex (m - cv) functions

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
The theory of m-convex (m − cv) functions is a new direction in the real geometry. In this work, by using the connection m − cv functions with strongly m-subharmonic (shm) functions and using well-known and rich properties of shm functions, we show a ...
M.B. Ismoilov, R.A. Sharipov
doaj   +1 more source

SOME PROPERTIES OF M-SUBHARMONIC FUNCTIONS

open access: yes
It is proved in the paper that if a function is -harmonic in a polydisk, then the function is -subharmonic.
Omonov O, Yodgarov S
core   +2 more sources

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