Characterizing PSPACE with pointers

Mathematical Logic Quarterly 54 (3):323-329 (2008)
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Abstract

This paper gives an implicit characterization of the class of functions computable in polynomial space by deterministic Turing machines – PSPACE. It gives an inductive characterization of PSPACE with no ad-hoc initial functions and with only one recursion scheme. The main novelty of this characterization is the use of pointers to reach PSPACE. The presence of the pointers in the recursion on notation scheme is the main difference between this characterization of PSPACE and the well-known Bellantoni-Cook characterization of the polytime functions – PTIME.

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Citations of this work

Weak Theories of Operations and Types.Thomas Strahm - 2010 - In Ralf Schindler, Ways of Proof Theory. Berlin, Boston: De Gruyter. pp. 441-468.
A recursion-theoretic approach to NP.Isabel Oitavem - 2011 - Annals of Pure and Applied Logic 162 (8):661-666.
Logspace without Bounds.Isabel Oitavem - 2010 - In Ralf Schindler, Ways of Proof Theory. Berlin, Boston: De Gruyter. pp. 355-362.

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References found in this work

The Intrinsic Computational Difficulty of Functions.Alan Cobham - 1965 - In Yehoshua Bar-Hillel, Logic, methodology and philosophy of science. Amsterdam: North-Holland Pub. Co.. pp. 24-30.
Characterizing NC with tier 0 pointers.Isabel Oitavem - 2004 - Mathematical Logic Quarterly 50 (1):9.
Characterizing NC with tier 0 pointers.Isabel Oitavern - 2004 - Mathematical Logic Quarterly 50 (1):9-17.

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