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Author, Editor

Author(s):

Hanus, Michael

dblp



Editor(s):





BibTeX cite key*:

Hanus95ICLP

Title, Booktitle

Title*:

On Extra Variables in (Equational) Logic Programming

Booktitle*:

Proceedings of the Twelfth International Conference on Logic Programming

Event, URLs

URL of the conference:


URL for downloading the paper:


Event Address*:

Kanagawa, Japan

Language:

English

Event Date*
(no longer used):

June 13-17

Organization:


Event Start Date:

27 May 2019

Event End Date:

27 May 2019

Publisher

Name*:

MIT Press

URL:


Address*:

Cambridge, USA

Type:


Vol, No, Year, pp.

Series:


Volume:


Number:


Month:


Pages:

665-679

Year*:

1995

VG Wort Pages:


ISBN/ISSN:


Sequence Number:


DOI:




Note, Abstract, ©


(LaTeX) Abstract:

Extra variables in a clause are variables which occur in the body but
not in the head. It has been argued that extra variables are necessary
and contribute to the expressive power of logic languages. In the
first part of this paper, we show that this is not true in general. For
this purpose, we provide a simple syntactic transformation of each
logic program into a logic program without extra variables, and
we show a strong correspondence between the original and the
transformed program. In the second and main part of this paper, we use a
similar technique to provide new completeness results for equational
logic programs with extra variables. In equational logic programming
it is well known that extra variables cause problems since narrowing,
the standard operational semantics for equational logic programming,
may become incomplete in the presence of extra variables.
Using a simple syntactic transformation, we derive a number
of new completeness results for narrowing.
In particular, we show the completeness of narrowing strategies
in the presence of nonterminating functions and extra variables
in right-hand sides of rewrite rules.
Using these results, current functional logic languages can be
extended in a practically useful way.



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Access Level:


Correlation

MPG Unit:

Max-Planck-Institut für Informatik



MPG Subunit:

Programming Logics Group

Audience:

experts only

Appearance:

CCL bibliography



BibTeX Entry:

@INPROCEEDINGS{Hanus95ICLP,
AUTHOR = {Hanus, Michael},
TITLE = {On Extra Variables in (Equational) Logic Programming},
BOOKTITLE = {Proceedings of the Twelfth International Conference on Logic Programming},
PUBLISHER = {MIT Press},
YEAR = {1995},
PAGES = {665--679},
ADDRESS = {Kanagawa, Japan},
}


Entry last modified by Christine Kiesel, 03/12/2010
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Editor(s)
Created
01/23/1996 09:26:21 AM
Revisions
4.
3.
2.
1.
0.
Editor(s)
Christine Kiesel
Uwe Brahm/MPII/DE
Uwe Brahm/MPII/DE
Christine Kiesel/AG2/MPII/DE
Christine Kiesel/AG2/MPII/DE
Edit Dates
04.09.2001 12:31:58
03/25/96 09:32:53 PM
03/25/96 04:07:33 PM
23/01/96 09:36:58
23/01/96 09:28:21