Abstract
The operation of bounded prefix concatenation (BPC) is introduced on the set of word functions in the alphabet {1, 2}. The class BPC of polynomially computable functions is defined on the basis of this operation and the superposition operation. The class BPC is shown to contain a number of word functions and to be closed with respect to certain known operations. A certain type of two-tape nonerasing Turing machines is introduced, functions from the class BPC are shown to be computable on machines of this type in polynomial time.
Funding: This research was carried out with the financial support of the Russian Foundation for Basic Research (grant no. 13-01-00958).
Note: Originally published in Diskretnaya Matematika (2015) 27,
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Artikel in diesem Heft
- Research Article
- Finite automata and numbers
- Research Article
- On coincidences of tuples in a binary tree with random labels of vertices
- Research Article
- On elementary word functions obtained by bounded prefix concatenation
- Research Article
- Functions without short implicents. Part II: Construction
- Research Article
- Images of a finite set under iterations of two random dependent mappings
- Research Article
- Extinction of decomposable branching processes