Results 31 to 40 of about 502,946 (294)

On the approximation of the set of trajectories of control system described by a Volterra integral equation

Nonlinear Analysis, 2014
In this paper, the set of trajectories of the control system described by a nonlinear Volterra integral equation is studied. It is assumed that the set of admissible control functions is the closed ball of the space Lp, p > 1, with radius µ and centered ...
Anar Huseyin
doaj   +1 more source

Improved Barrier Function With Adjustable Parameter-Based Tracking Control for Robot Under Position Constraints

IEEE Access, 2023
An improved time-variant asymmetric integral barrier function with adjustable parameters is constructed for the first time in this study. The presented barrier function, which is constructed by designing an integral upper limit function, can be used in ...
Tan Zhang, Duansong Wang, Jinzhong Zhang, Pianpian Yan   +3 more
doaj   +1 more source

A Path-integral for the Master Constraint of Loop Quantum Gravity

, 2010
In the present paper, we start from the canonical theory of loop quantum gravity and the master constraint programme. The physical inner product is expressed by using the group averaging technique for a single self-adjoint master constraint operator.
Ashtekar A, Baratin A Flori C Thiemann T, Brown L, Conway J B, Dittrich B, Dittrich B, Dittrich B, Dittrich B, Dittrich B, Engle J Han M Thiemann T, Flori C, Flori C Thiemann T, Freidel L, Giesel K, Giesel K, Giesel K, Giulini D, Giulini D, Han M, Han M Thiemann T, Han M Thiemann T, Klauder J, Muxin Han, Pietri R De, Reed M, Reisenberger M P, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T   +35 more
core   +1 more source

On the Relation between Rigging Inner Product and Master Constraint Direct Integral Decomposition

, 2009
Canonical quantisation of constrained systems with first class constraints via Dirac's operator constraint method proceeds by the thory of Rigged Hilbert spaces, sometimes also called Refined Algebraic Quantisation (RAQ).
Bergmann P., Dirac P. A. M., Henneaux M., Muxin Han, Reed M., Rudin W., Thomas Thiemann   +6 more
core   +1 more source

The problem of first integral of nonholonomic systems

Vietnam Journal of Mechanics, 2001
In this paper, the problem of first integrals of a nonholonomic system is discussed. The aim of this work is concentra.ted on finding the condition for existence of first integrals.
Do Sanh
doaj   +1 more source

Path Integral and Solutions of the Constraint Equations: The Case of Reducible Gauge Theories

, 1994
It is shown that the BRST path integral for reducible gauge theories, with appropriate boundary conditions on the ghosts, is a solution of the constraint equations.
Ferraro, R., Henneaux, M., Puchin, M.
core   +2 more sources

Coherent State Quantization of Constraint Systems [PDF]

, 1996
A careful reexamination of the quantization of systems with first- and second-class constraints from the point of view of coherent-state phase-space path integration reveals several significant distinctions from more conventional treatments.
Aronszajn, Faddeev, Friedberg, Govaerts, Gribov, Henneaux, Higuchi, Hájı́, Isham, Isham, John R. Klauder, Klauder, Klauder, Landsman, Meschkowski, Prokhorov, Senjanovic, Singer, Teitelboim   +18 more
core   +2 more sources

Integrity constraints in trust management [PDF]

Proceedings of the tenth ACM symposium on Access control models and technologies, 2005
We introduce the use, monitoring, and enforcement of integrity constraints in trust management-style authorization systems. We consider what portions of the policy state must be monitored to detect violations of integrity constraints. Then we address the fact that not all participants in a trust management system can be trusted to assist in such ...
Etalle, Sandro, Winsborough, William H.
openaire   +5 more sources

On the Relation between Operator Constraint --, Master Constraint --, Reduced Phase Space --, and Path Integral Quantisation

, 2009
Path integral formulations for gauge theories must start from the canonical formulation in order to obtain the correct measure. A possible avenue to derive it is to start from the reduced phase space formulation.
Ashtekar A, Ashtekar A, Ashtekar A, Baratin A Flori C Thiemann T, Bojowald M Perez A, Buffenoir E, Dirac P A M, Dittrich B, Dittrich B, Engle J Han M Thiemann T, Fleischhack C, Fradkin E S Vilkovisky G A, Giesel K, Giesel K Hofmann S Thiemann T Winkler O, Giesel K Hofmann S Thiemann T Winkler O, Giesel K Tambornino J Thiemann T, Giesel K Thiemann T, Gitman D M, Giulini D, Glimm J, Haag R, Han M, Han M, Han M Thiemann T, Henneaux M, Hollands S Wald R, Muxin Han, Perez A, Ramond P, Reed M, Roeppstorff G, Rovelli C, Rovelli C, Rudin W, Scharf G, T Thiemann, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Wald R M   +41 more
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Solving the Hamilton-Jacobi equation for gravitationally interacting electromagnetic and scalar fields [PDF]

, 1997
The spatial gradient expansion of the generating functional was recently developed by Parry, Salopek, and Stewart to solve the Hamiltonian constraint in Einstein-Hamilton-Jacobi theory for gravitationally interacting dust and scalar fields.
Bahman Darian, Goldstein H, Hanson A, Misner C, Peres A   +4 more
core   +2 more sources