Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-26T07:15:04.138Z Has data issue: false hasContentIssue false

An extension of the method of the hypercircle to linear operator problems with unilateral constraints

Published online by Cambridge University Press:  14 November 2011

W. D. Collins
Affiliation:
Department of Applied Mathematics and Computing Science, University of Sheffield

Synopsis

By using a Hilbert space decomposition theorem for two polar cones it is shown that the method of the hypercircle can be extended to determine solutions to best approximation problems involving unilateral constraints. The method is applied to abstract boundary value problems for linear operators involving such constraints.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1980

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1Prager, W. and Synge, J. L.. Approximations in elasticity based on the concept of function space. Quart. Appl. Math. 5 (1947), 241269.CrossRefGoogle Scholar
2Synge, J. L.. The hypercircle in mathematical physics (Cambridge: Univ. Press, 1957).CrossRefGoogle Scholar
3Moreau, J. J.. Décomposition orthogonale d'un espace hilbertien selon deux cônes mutuellement polaires. C. R. Acad. Sci. Paris 255 (1962), 238240.Google Scholar
4Moreau, J. J.. Convexity and duality. In Functional analysis and optimization (Ed Caianiello, E. R.), 145–149 (New York: Academic Press, 1966).Google Scholar
5Showalter, R. E.. Hilbert space methods for partial differential equations (London: Pitman, 1977).Google Scholar
6Hestenes, M. R.. Optimization theory 177–252 (New York: Wiley, 1975).Google Scholar
7Aubin, J.-P.. Approximation of elliptic boundary value problems 164–204 (New York: Wiley-Interscience, 1972).Google Scholar
8Collins, W. D.. Upper and lower bounds for solutions of linear operator problems with unilateral constraints. Proc. Roy. Soc. Edinburgh Sect. A 76 (1976), 95105.CrossRefGoogle Scholar
9Bachman, G. and Narici, L.. Functional Analysis 420–431 (New York: Academic Press, 1966).Google Scholar
10Fichera, G.. Boundary value problems of elasticity with unilateral constraints. In Handbuch der Physik VI a/2, 391–424 (Berlin: Springer Verlag, 1972).Google Scholar
11Duvaut, G. and Lions, J. L.. Inequalities in mechanics and physics 150–152 (Berlin: Springer Verlag, 1976).CrossRefGoogle Scholar
12Villaggio, P.. Two-sided estimates in unilateral elasticity Int. J. Solids Structures 13 (1977), 279292.CrossRefGoogle Scholar