[comp.theory] RTA-91

lescanne@LORIA.CRIN.FR (Pierre Lescanne) (03/07/91)

		    RTA-91:   PRELIMINARY PROGRAM
		  Fourth International Conference on
		Rewriting Techniques  and Applications

			    April 10-12, 1991
			       Como, Italy

For information about registration, etc., see below or contact

Professor G. Degli Antoni or Dr. Marelva Bianchi
Dipartimento di Scienze dell'Informatione
Universita degli Studi di Milano
Via Moretto da Brescia, 9
I - 20133 Milano, Italy

Telephone: +39.2.7575.201 / 209
	   +39.2.7575.257
FAX:	   +39.2.7611.0556
e-mail:	   gdantoni@imisiam.BITNET


WEDNESDAY, 10 APRIL
___________________
___________________

8:30-8:45	Opening.

SESSION 1 	G. Smolka (U. Saarbrucken), Chair.

8:45-9:10	Transfinite reductions in orthogonal term rewriting systems.
		J. R. Kennaway  (U. East Anglia), J. W. Klop  (CWI, Amsterdam),
		M. R. Sleep  (U. East Anglia), and F. J. de Vries (CWI, Amsterdam)

9:15-9:40	Redex captured in term graph rewriting.
		W. Farmer and R. Watro  (MITRE Corp., Bedford)

9:45-10:10      Rewriting, narrowing, and equational unification: the
		higher-order cases.
		D. A. Wolfram  (Oxford U.)

10:15-10:40	Adding algebraic rewriting to the untyped lambda calculus.
		D. Dougherty  (Wesleyan U.)

10:40-11:10	BREAK

SESSION 2	L. Bachmair  (SUNY at Stony Brook),  Chair.

11:10-11:35	Incremental termination proofs and the length of derivations.
		F. Drewes  (U. Bremen)  and C. Lautemann  (U. Mainz)

11:40-12:05     Time bounded rewrite systers and termination proofs by
		generalized embedding.
		D. Hofbauer  (TU Berlin)

12:10-12:35	Detecting redundant narrowing derivations by the LSE-SL test.
		A. Bockmayr and S. Krischer  (U. Karlsruhe)

12:35-14:30	LUNCH

SESSION 3	U. Martin (U. London and MIT),  Chair.

14:30-14:55	Unification, weak unification, upper bound, lower bound, and
		generalization problems.
		F. Baader  (U. Kaiserslautern)

15:00-15:25	AC unification through order-sorted AC1 unification.
		E.  Domenjoud   (CNRS and INRIA, Nancy)

15:30-15:55	Narrowing directed by a graph of terms.
		J. Chabin and P. Rety  (U. Orlans)

16:00-16:25	How algebra can help in equational unification.
		F. Baader and W. Nutt  (U. Kaiserslautern)

16:25-16:55     BREAK

SESSION  4	C. Kirchner (INRIA, Nancy),  Chair.


16:55-17:20	Undecidable properties of syntactic theories.
		F.  Klay   (INRIA, Nancy)

17:25-17:50	Goal directed strategies for paramodulation.
		W. Snyder and C. Lynch   (Boston U.)

17:55-18:20	Minimal solutions of linear diophantine systems: bounds and
		algorithms.
		L. Pottier   (INRIA, Sophia Antipolis)
________________________________________________________
THURSDAY, 11 APRIL

SESSION  5	H. Ganzinger  (U. Dortmund), Chair.

8:30-8:55	Proofs in parametrized specifications.
		H. Kirchner  (CNRS and INRIA, Nancy)

9:00-9:25	Completeness of combinations of constructor systems.
		A. Middeldorp (CWI, Amsterdam) and
		Y. Toyama  (CWI, Amsterdam and NTT Labs.)

9:30-9:55	Modular higher-order E-unification.
		T. Nipkow  (U. Cambridge)  and  Z. Qian  (U. Bremen)

10:00-10:25	On confluence for weakly normalizing systems.
		P-L Curien (CNRS, Paris)  and  G. Ghelli  (U. Pisa)

10:25-10:55	BREAK

SESSION 6	L. Bachmair (Stony Brook), Chair.

10:55-11:20	Program transformation and rewriting.
		F. Bellegarde  (Oregon Grad. Inst.)

11:25-11:50	An efficient representation of arithmetic for term rewriting.
		D. Cohen  (Royal Holloway and Bedford New College) and
		P. Watson  (Glasgow U.)

11:55-12:20     Query optimization using conditional and unconditional
		rewrite rules.
		S.  van Denneheuval,  K. Kwast,  E.  Spaan  (U.
		Amsterdam), and  Renardel de Lavalette  (U.  Utrecht)

12:20-14:30	LUNCH

SESSION 7:	F. Otto (U. Kassel), Chair

14:30-14:55	Boolean algebra admits no canonical term rewriting system.
		R. Socher-Ambrosius  (U. Kaiserslautern and SUNY, Stony Brook)

15:00-15:25     Decidability of confluence and termination of monadic
		term rewriting systems.
		K. Salomaa  (U. Turku)

15:30-15:55	Bottom-up tree pushdown automata and rewrite systems.
		J-L Coquide, M. Dauchet, R. Gilleron ( U. Lille ), and
		S. Vagvolgyi (Hungerian Acad. Sci., Szeged)

16:00-16:25     On relationship between term rewriting systems and
		regular tree languages.
		G. Kucherov (USSR Acad. Sci., Novosibirsk)

16:25-16:55	BREAK

SESSION 8	R. Book (UC Santa Barbara), Chair.

17:00-17:25     The equivalence of boundary and confluent graph
		grammars on graph languages with bounded degree.
		F. Brandenburg, U. Passau

17:30-17:55	Left-to-right tree pattern matching.
		A. Graef (U. Mainz)

18:00-18:25     Incremental techniques for efficient normalization of
		nonlinear rewrite systems.
		R. Ramesh  (U. Texas - Dallas) and
		I.V. Ramakrishnan  (SUNY at Stony Brook)
_______________________________________________________
FRIDAY. 12 APRIL

SESSION 9	F. Winkler (U. Linz), Chair.

8:45-9:10	On fairness of completion-based theorem proving strategies.
		M. P. Bonacina  (U. Milano and SUNY at Stony Brook)  and
		J. Hsiang  (SUNY at Stony Brook)

9:15-9:40       Proving inductive theorems by completion and embedding
		techniques.
		J. Avenhaus  (U. Kaiserslautern)

9:45-10:10	Divergence phenomena during completion.
		A. Sattler-Klein  (U. Kaiserslautern)

10:15-10:40	Simulating Buchberger's algorithm by Knuth-Bendix completion.
		R. Buendgen  (U. Tuebingen)

10:40-11:10	BREAK

SESSION 10  C. Kirchner (INRIA, Nancy), Chair.

11:10-11:35	On proving properties of completion strategies.
		M. Hermann  (CNRS and INRIA, Nancy)

11:40-12:05	On AC-termination and ground AC-completion.
		C. Marche (U. Paris-Sud)

12:10-12:35     Any ground associative-commutative theory has a finite
		canonical system.
		P. Narendran  (SUNY at Albany) and
		M. Rusinowitch  (CNRS and INRIA, Nancy)

FINI
________________________________________________________

SYSTEMS DEMONSTRATIONS

A narrowing-based theorem prover.
U. Fraus (U. Passau) and H. Hussmann  (TU Muenchen)

ANIGRAF:  An interactive systerm for the animation of graph rewriting
systems with priorities.
M. Billaud   (U. Bordeaux)

EMMY:  A refutational theorem prover for first-order logic with
equations.
A. Deruyer   (U. Lille and SUNY at Stony Brook)

The Tecton Proof System.
R. Agarwal  (Rensselaer Poly. Inst.),  D. Kapur (SUNY at Albany),
D. Musser (Rensselaer Poly. Inst.), X. Nie  (SUNY at Albany)


==============================================================================
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RTA '91              Advanced registration            On site registration
Attendees                 Lit.   300.000                      Lit.   350.000
Lecturers                 Lit.   230.000                      Lit.   280.000
Commitee members          Lit.   200.000                      Lit.   230.000