Results 81 to 90 of about 94,271 (311)

Oriented Lagrangian Matroids

open access: yesEuropean Journal of Combinatorics, 2001
20 pages.
Department of Mathematics, UMIST, PO Box 88, Manchester M60 1QD, U.K. f1 richard.booth@umist.ac.uk f1 f2 alexandre.borovik@umist.ac.uk f2 ( host institution )   +4 more
openaire   +3 more sources

A Unifying Approach to Self‐Organizing Systems Interacting via Conservation Laws

open access: yesAdvanced Intelligent Discovery, EarlyView.
The article develops a unified way to model and analyze self‐organizing systems whose interactions are constrained by conservation laws. It represents physical/biological/engineered networks as graphs and builds projection operators (from incidence/cycle structure) that enforce those constraints and decompose network variables into constrained versus ...
F. Barrows   +7 more
wiley   +1 more source

Development of a total Lagrangian SPH code for the simulation of solids under dynamioc loading [PDF]

open access: yes, 2007
This thesis makes use of an alternative SPH formulation, the Total Lagrangianf ormulation, to characterised ynamic eventsi n solids and to achieve the proposed objectives outlined in Chapter 1.
Reveles, Juan R.
core  

Lagrangian flows for vector fields with gradient given by a singular integral [PDF]

open access: yes, 2013
We prove quantitative estimates on ows of ordinary di erential equations with vector field with gradient given by a singular integral of an L1 function.
Crippa, Gianluca, Bouchut, Francois
core   +1 more source

On Lagrangian and non-Lagrangian conformal-invariant nonlinear electrodynamics [PDF]

open access: yesPhysica Scripta, 2019
Abstract A general approach is presented to describe nonlinear classical Maxwell electrodynamics with conformal symmetry in flat spacetime. We introduce generalized nonlinear constitutive equations, expressed in terms of constitutive tensors dependent on conformal-invariant functions of the field strengths.
Steven Duplij   +2 more
openaire   +2 more sources

Deep Learning Approaches for Classifying Crack States With Overload and Predicting Fatigue Parameters in a Titanium Alloy

open access: yesAdvanced Intelligent Systems, EarlyView.
This study proposes a deep learning approach to evaluate the fatigue crack behavior in metals under overload conditions. Using digital image correlation to capture the strain near crack tips, convolutional neural networks classify crack states as normal, overload, or recovery, and accurately predict fatigue parameters.
Seon Du Choi   +5 more
wiley   +1 more source

Lagrangian Averaging, Nonlinear Waves, and Shock Regularization [PDF]

open access: yes, 2005
In this thesis, we explore various models for the flow of a compressible fluid as well as model equations for shock formation, one of the main features of compressible fluid flows.
Bhat, Harish Subrahmanya
core   +1 more source

A Lagrangian camel

open access: yesCommentarii Mathematici Helvetici, 1999
We prove the Lagrangian analogue of the symplectic camel theorem: there are compact Lagrangian submanifolds of {\Bbb R}^{2n} that cannot be moved through a small hole by a global Hamiltonian isotopy with compact support.
openaire   +4 more sources

Lagrangian crumpling equations [PDF]

open access: yesPhysical Review E, 2009
A concise method for following the evolving geometry of a moving surface using Lagrangian coordinates is described. All computations can be done in the fixed geometry of the initial surface despite the evolving complexity of the moving surface. The method is applied to three problems in nonlinear elasticity: the bulging of a thin plate under pressure ...
openaire   +3 more sources

On the variety of Lagrangian subalgebras, II [PDF]

open access: yesAnnales Scientifiques de l’École Normale Supérieure, 2001
When ${\frak g}$ is a complex semisimple Lie algebra, we study the variety ${\mathcal L}$ of subalgebras of ${\frak g}\oplus{\frak g}$ that are maximally isotropic with respect to $K_1 - K_2$, where $K_i$ is the Killing form on the ith factor. We show the irreducible components of ${\mathcal L}$ are smooth, classify them in terms of the generalized ...
Evens, S, Lu, JH
openaire   +10 more sources

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