Results 71 to 80 of about 24,845 (203)
Computer Graphics Forum, EarlyView.Abstract We introduce mixed super‐circles, a position‐curvature formulation of the original dynamic 2D super‐helix model. Compared to the latter, purely curvature‐based model – the so‐called chained formulation –, the mixed formulation that we propose here drastically reduces the algorithmic complexity of the solving scheme – from quadratic to quasi ...
Emile Hohnadel +2 more
wiley +1 more source
Schur complements and statistics
Linear Algebra and its Applications, 1981 AbstractIn this paper we discuss various properties of matrices of the type S=H−GE−1F, which we call the Schur complement of E in A = EFGH The matrix E is assumed to be nonsingular. When E is singular or rectangular we consider the generalized Schur complements S=H−GE−F, where E− is a generalized inverse of E.
openaire +2 more sources
Discrete Dynamics in Nature and Society, 2010 This paper focuses on the chaos control problem of the unified chaotic systems with structured uncertainties. Applying Schur-complement and some matrix manipulation techniques, the controlled uncertain unified chaotic system is then transformed into the ...
Neng-Sheng Pai, Her-Terng Yau
doaj +1 more source
Advances in Difference Equations, 2019 This paper deals with the problems of robust stability for a class of uncertainty parameter systems with delays. By using a new Lyapunov–Krasovskii functional, quadratic inequality, and Schur complement technique, two conditions are developed to ...
Xianghui Zhou, Zizong Yan
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Trade and Selection With Heterogeneous Firms and Perfect Competition
Review of International Economics, EarlyView.ABSTRACT This paper extends the Heckscher–Ohlin–Samuelson framework to allow for heterogeneous firms with capacity constraints. We show that the central theorems of the HOS model (as well as their standard generalizations via duality) carry over to our setting.
Xue Bai +3 more
wiley +1 more source
IEEE Access, 2019 Let G be a connected graph. The subdivision graph S(G) of a graph (G) is the graph obtained by inserting a new vertex into every edge of G. The set of such new vertices is denoted by I(G).
Qun Liu
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Comparison of Chiral Fermion Methods
, 2005 We present a comparison of various five-dimensional representations of chiral fermions considering their cost and residual chiral symmetry breaking.Comment: LATTICE 2005(Chiral Fermions), 12 pages (joint proceedings for R.G.
Anthony D. Kennedy +5 more
core +4 more sources
Coupled Clustering in Hierarchical Matrices for the Oseen Problem
International Journal for Numerical Methods in Fluids, Volume 98, Issue 6, Page 751-765, June 2026.Fluid flow problems can be modelled by the Navier‐Stokes or, after linearization, by the Oseen equations. Their discretization results in linear systems in saddle point form which are typically very large and need to be solved iteratively. We propose a novel block structure for hierarchical matrices which is then used to build preconditioners for the ...
Jonas Grams, Sabine Le Borne
wiley +1 more source
A Novel Mixed‐Hybrid, Higher‐Order Accurate Formulation for Kirchhoff–Love Shells
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.ABSTRACT This paper presents a novel mixed‐hybrid finite element formulation for Kirchhoff–Love shells, designed to enable the use of standard C0$C^0$‐continuous higher‐order Lagrange elements. This is possible by introducing the components of the moment tensor as a primary unknown alongside the displacement vector, circumventing the need for C1$C^1 ...
Jonas Neumeyer, Thomas‐Peter Fries
wiley +1 more source
On the order of the Schur multiplier of a pair of finite p-groups II [PDF]
International Journal of Group Theory, 2013 Let G be a finite p-group and N be a normal subgroup of G with |N|=p^n and |M|=p^m. A result of Ellis (1998) shows that the order of the Schur multiplier of such a pair (G,N) of finite p-groups is bounded by p^(1/2 n(2m+n-1)) and hence it is equal to p ...
Behrooz Mashayekhy +2 more
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