Results 61 to 70 of about 24,678 (193)

A multiscale approach to liquid crystal nematics via statistical field theory

, 2017
We propose an approach to a multiscale problem in the theory of thermotropic uniaxial nematics based on the method of statistical field theory. This approach enables us to relate the coefficients $A$, $B$, $C$, $L_1$ and $L_2$ of the Landau-de Gennes ...
Lu, Bing-Sui
core   +1 more source

On Direct Fuzzy Stability of General Quartic Functional Equation

Asian Research Journal of Mathematics, 2023
The goal of this paper is to investigate the Generalized Hyers - Ulam - Rassias (HUR) stability of generalquartic functional equation (GQFE)                                                             fq(kr1 + (k -1)r2) + fq(kr1 - (k -1)r2) = 2k4fq(r1) + 2(k -1)4fq(r2)                                   +6k2(k -1)2[fq(r1 + r2) + fq(r1 - r2)] - 12k2(k ...
openaire   +1 more source

A Note on Local Polynomial Regression for Time Series in Banach Spaces

Journal of Time Series Analysis, EarlyView.
ABSTRACT This work extends local polynomial regression to Banach space‐valued time series for estimating smoothly varying means and their derivatives in non‐stationary data. The asymptotic properties of both the standard and bias‐reduced Jackknife estimators are analyzed under mild moment conditions, establishing their convergence rates.
Florian Heinrichs
wiley   +1 more source

Calabi-Yau Threefolds Fibred by Mirror Quartic K3 Surfaces

, 2015
We study threefolds fibred by mirror quartic K3 surfaces. We begin by showing that any family of such K3 surfaces is completely determined by a map from the base of the family to the moduli space of mirror quartic K3 surfaces. This is then used to give a
Doran, Charles F., Harder, Andrew, Novoseltsev, Andrey Y., Thompson, Alan   +3 more
core   +1 more source

A GENERALIZED ADDITIVE-QUARTIC FUNCTIONAL EQUATION AND ITS STABILITY

Bulletin of the Korean Mathematical Society, 2015
An(x1, x2, . . . , xn) = An(xπ(1), xπ(2), . . . , xπ(n)) for every permutation {π(1), π(2), . . . , π(n)} of {1, 2, . . . , n} where n is a positive number, then a function An is called symmetric. Denote the diagonal element An(x, x, . . . , x) by A (x) if An(x1, x2, . . .
CHARINTHIP HENGKRAWIT, ANURK THANYACHAROEN   +1 more
openaire   +2 more sources

Sequential Outlier Detection in Nonstationary Time Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs, Patrick Bastian, Holger Dette   +2 more
wiley   +1 more source

A FIXED POINT APPROACH TO THE FUZZY STABILITY OF A QUADRATIC-QUARTIC FUNCTIONAL EQUATION

Tạp chí Khoa học Đại học Đà Lạt, 2012
Using fixed point method, we prove the Hyers-Ulam stability of the following quadratic-quartic functional equation f(x + 2y) + f(x - 2y) = 4f(x + y) + 4f(x - y) - 6f(x) + 2f(2y) - 8f(y) in fuzzy Banach ...
Choonkil Park, Jung Rye Lee, Dong Yun Shin   +2 more
doaj   +1 more source

Higher-Spin Gauge Theories and Bulk Locality

, 2018
We present a no-go result on consistent Noether interactions among higher-spin gauge fields on anti-de Sitter space-times. We show that there is a non-local obstruction at the classical level to consistent interacting field theory descriptions of ...
Sleight, Charlotte, Taronna, Massimo
core   +1 more source

Topology Optimization in Civil Engineering − On the Consideration of Concrete Failure Characteristic and Self‐Weight

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT The mechanical efficiency of civil engineering structures is a key factor in the sustainable transformation of the building sector. This study presents topology optimization in civil engineering design. The static load profile of civil engineering structures is typically dominated by their self‐weight, which introduces, as a special ...
Daniela Masarczyk, Minh Tuan Tran, Detlef Kuhl   +2 more
wiley   +1 more source

AdS and stabilized extra dimensions in multidimensional gravitational models with nonlinear scalar curvature terms 1/R and R^4

, 2005
We study multidimensional gravitational models with scalar curvature nonlinearities of the type 1/R and R^4. It is assumed that the corresponding higher dimensional spacetime manifolds undergo a spontaneous compactification to manifolds with warped ...
Abramowitz M, Alexander Zhuk, Arnold V I, Astefanesei D, Banks T, Barrow J D, Becker K, Biswas T, Blanco-Pillado J J, Burgess C P, Burgess C P, Burgess C P, Capozziello S Carloni S Troisi A, Carlos Romero, Chen C-M, Dyson L M, Forgacs P, Gaida I, Gaida I, Gomez-Reino M, Groot Nibbelink S van Tent B J W, Gutperle M, Günther U, Günther U, Günther U Zhuk A, Günther U Zhuk A, Howe P S, Hsu J P, Hsu J P, Ivashchuk V D, Ivashchuk V D, Kachru S, Kachru S, Kallosh R Prokushkin S, Kaya A, Kofman L, Linde A, Linde A, Meng X, Navarro I, Starobinsky A, Tsujikawa S, Uwe Günther, Valdir B Bezerra, Wands D   +44 more
core   +1 more source