Results 41 to 50 of about 7,130 (129)
S-almost perfect commutative rings
, 2019 Given a multiplicative subset S in a commutative ring R, we consider S-weakly cotorsion and S-strongly flat R-modules, and show that all R-modules have S-strongly flat covers if and only if all flat R-modules are S-strongly flat.
Silvana Bazzoni +3 more
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Capturing the Zero: A New Class of Zero-Augmented Distributions and Multiplicative Error Processes [PDF]
We propose a novel approach to model serially dependent positive-valued variables which realize a non-trivial proportion of zero outcomes. This is a typical phenomenon in financial time series observed on high frequencies, such as cumulated trading ...
Peter Malec +2 more
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Multiplicative Fractional Hermite–Hadamard-Type Inequalities in G-Calculus
This paper extends Hermite–Hadamard-type inequalities to the fractional multiplicative framework of G-calculus. Using multiplicative Riemann–Liouville fractional integrals, we introduce a notion of multiplicative convexity and establish fractional ...
Wedad Saleh, Abdelghani Lakhdari
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, 2012 This thesis considers the development of multiplicative thinking and proportional reasoning from two perspectives. Firstly, it examines the research literature on progressions in conceptual understanding to create a Hypothetical Learning Trajectory (HLT).
Wright, Vincent John
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Schur-Convexity for a Class of Symmetric Functions and Its Applications
, 2009 For x=(x1,x2,…,xn)∈R+n, the symmetric function ϕn(x,r) is defined by ϕn(x,r)=ϕn(x1,x2,…,xn;r)=∏1≤i1<i2⋯<ir≤n(∑j=1r(xij/(1+xij)))1/r, where r=1,2,…,n and i1 ...
Wei-Feng Xia, Yu-Ming Chu
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The problem of S. M Ulam for approximately multiplicative mappings
, 2000 In the present paper we study the problem of S. M.
Rassias, Themistocles M., Rassias, TM
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A Simplified Convex Optimization Model for Image Restoration with Multiplicative Noise. [PDF]
J Imaging, 2023 Che H, Tang Y.
europepmc +1 more source
Symmetrization, convexity and applications
, 2020 Based on permutation enumeration of the symmetric group and 'generalized' barycentric coordinates on arbitrary convex polytope, we develop a technique to obtain symmetrization procedures for functions that provide a unified framework to derive ...
Allal Guessab, Florian Guessab
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, 2013 We introduce a copula-based dynamic model for multivariate processes of (non-negative) high-frequency trading variables revealing time-varying conditional variances and correlations.
Hautsch, Nikolaus, Bodnar, Taras
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Multiplicative habit formation and consumption: a note
, 2011 A multiplicative form of the habit term in the utility function has some undesirable properties if the habit function is itself still additive (Wendner, 2003).
Holly, S +5 more
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