COUNTEREXAMPLES AND BOUNDS FOR GRAPHS SOLVABLE WITH FINITE DELAY,
Abstract
A finite directed labelled graph G with vertices v sub i, i=1 to i=n and labels (sigma sub i) subscript (sigma sub i epsilon Sigma) is solvable with delay d if for every sequence of labels sigma sub 1,..., sigma sub k one can determine a sequence of vertices v sub (i sub 0)---v sub (i sub k) such that there is a path connecting the vertices v sub (i sub 0)---v sub (i sub k), labeled sigma sub 1 --- sigma sub k and for every j v sub ij is determined by the subsequence sigma sub (j+1) --- sigma sub (j+d) only. The paper presents a family of counterexamples proving a new lower bound for d. A new simple proof is given for a known upper bound for d and a new upper bound for d is given for the case where the sequences of labels are restricted to a regular event.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 03, 1969
- Accession Number
- AD0695034
Entities
People
- A. Paz
Organizations
- University of California, Los Angeles