InforLorV4, Main, Merge, bibRecord, 005742

Towards an implicit characterization of NCk

Identifieur interne : 005742 ( Main/Merge ); précédent : 005741; suivant : 005743

Towards an implicit characterization of NCk

Auteurs : G. Bonfante [France] ; R. Kahle [Portugal] ; J.-Y. Marion [France] ; I. Oitavem [Portugal]

Source :

Lecture notes in computer science [ 0302-9743 ] ; 2006.

RBID : Pascal:07-0471898

Descripteurs français

Pascal (Inist)
- Programmation logique, Pointeur.

English descriptors

KwdEn :
- Logical programming, Pointer.

Abstract

We define a hierarchy of term systems T^k by means of restrictions of the recursion schema. We essentially use a pointer technique together with tiering. We prove T^k C NC^k C T^k+1, for k > 2. Special attention is put on the description of T² and T³ and on the proof of T² ⊆ NC² C T³. Such a hierarchy yields a characterization of NC.

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to stream PascalFrancis, to step Corpus: 000399
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to stream PascalFrancis, to step Checkpoint: 000337

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Pascal:07-0471898

Le document en format XML

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<front><div type="abstract" xml:lang="en">We define a hierarchy of term systems T<sup>k</sup>
 by means of restrictions of the recursion schema. We essentially use a pointer technique together with tiering. We prove T<sup>k</sup>
 C NC<sup>k</sup>
 C T<sup>k+1</sup>
, for k > 2. Special attention is put on the description of T<sup>2</sup>
 and T<sup>3</sup>
 and on the proof of T<sup>2</sup>
 ⊆ NC<sup>2</sup>
 C T<sup>3</sup>
. Such a hierarchy yields a characterization of NC.</div>
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Towards an implicit characterization of NCk

Towards an implicit characterization of NCk

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri