The structure of solution-sets for the equation $F(x)=G(y)$ is discussed, where $F,G$ are given residuated functions mapping between partially-ordered sets. An algorithm is proposed which produces a solution in the event of finite termination: this solution is maximal relative to initial trial values of $x,y$. Properties are defined which are sufficient for finite termination. The particular case of max-based linear algebra is discussed, with application to the synchronisation problem for discrete-event systems; here, if data are rational, finite termination is assured. Numerical examples are given. For more general residuated real functions, lower semicontinuity is sufficient for convergence to a solution, if one exists.
@article{119288, author = {Ray A. Cuninghame-Green and Karel Zimmermann}, title = {Equation with residuated functions}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {42}, year = {2001}, pages = {729-740}, zbl = {1068.93039}, mrnumber = {1883381}, language = {en}, url = {http://dml.mathdoc.fr/item/119288} }
Cuninghame-Green, Ray A.; Zimmermann, Karel. Equation with residuated functions. Commentationes Mathematicae Universitatis Carolinae, Tome 42 (2001) pp. 729-740. http://gdmltest.u-ga.fr/item/119288/
Synchronization and Linearity, An Algebra for Discrete Event Systems, Wiley, Chichester, 1992. | MR 1204266 | Zbl 0824.93003
Residuation Theory, Pergamon, Oxford, 1972. | MR 0396359 | Zbl 0301.06001
The Equation $A øtimes x = B øtimes y$ over $(\{ - \infty \} \cup {\Bbb R}, \max,+)$, Theoretical Computer Science, Special Issue on $(\max,+)$ Algebra, to appear. | MR 1957609
Residuation in fuzzy algebra and some applications, Fuzzy Sets and Systems 71 227-239 (1995). (1995) | MR 1329610 | Zbl 0845.04007
Minimax Algebra, Lecture Notes in Economics and Mathematical Systems No. 166, Springer-Verlag, Berlin, 1979. | MR 0580321 | Zbl 0739.90073
A General Linear Max-Plus Solution Technique, in Idempotency (ed. J. Gunawardena), Cambridge, 1998. | Zbl 0898.68035
Linear and Combinatorial Optimization in Ordered Algebraic Structures, North Holland, Amsterdam, 1981. | MR 0609751 | Zbl 0466.90045