Polygraphic programs and polynomial-time functions
arXiv:cs/0701032 · doi:10.2168/LMCS-5(2:14)2009
Abstract
We study the computational model of polygraphs. For that, we consider polygraphic programs, a subclass of these objects, as a formal description of first-order functional programs. We explain their semantics and prove that they form a Turing-complete computational model. Their algebraic structure is used by analysis tools, called polygraphic interpretations, for complexity analysis. In particular, we delineate a subclass of polygraphic programs that compute exactly the functions that are Turing-computable in polynomial time.
Logical Methods in Computer Science (to appear), 37 pages, 1 colour picture, corrected typos