Joint Mathematics Meetings Program by Special Session
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1998 Joint Mathematics Meetings
Baltimore, MD, January 710, 1998
Meeting #930
Associate secretaries:
Robert J Daverman, AMS daverman@math.utk.edu
Donovan H Van Osdol, MAA dv@christa.unh.edu
AMS Special Session on Commutative Algebra and Algebraic Geometry

Thursday January 8, 1998, 8:00 a.m.11:50 a.m.
AMS Special Session on Commutative Algebra and Algebraic Geometry, I
Organizers:
Melvin Hochster, University of Michigan, Ann Arbor hochster@math.lsa.umich.edu
Craig L. Huneke, Purdue University huneke@math.purdue.edu

8:00 a.m.
Etaleness, Normality and Intersections.
Mark S McCormick*, Michigan State University
(93013225)

8:30 a.m.
On the acyclicity of KustinUlrich complexes.
Alexandre B Tchernev*, Purdue University
(93013825)

9:00 a.m.
Further cases when weak Fregularity localizes.
Brian MacCrimmon*, University of Missouri
(930131059)

9:30 a.m.
Infinite free complexes with finite length homologies in characteristic $p(>0)$.
Sankar P. Dutta*, University of Illinois
(93013713)

10:00 a.m.
Formal Fibers at Height One Prime Ideals.
Susan Loepp*, Williams College
(9301388)

10:30 a.m.
On the existence of maximal CohenMacaulay modules over $p$th root extensions.
Daniel Katz*, University of Kansas
(93013865)

11:00 a.m.
Classification of 2dimensional Singularities via Tight Closure.
Janet Cowden Vassilev*, Virginia Commonwealth University/Purdue University
(930131190)

11:30 a.m.
Small CohenMacaulay modules over Segre products in characteristic p.
Douglas A Hanes*, University of Michigan
(93013866)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Commutative Algebra and Algebraic Geometry, II
Organizers:
Melvin Hochster, University of Michigan, Ann Arbor hochster@math.lsa.umich.edu
Craig L. Huneke, Purdue University hunkek@macaulay.math.purdue.edu

8:00 a.m.
Algorithmic computation of local cohomology modules: an application of noncommutative Gr\"obner bases to commutative algebra.
Uli Walther*, University of Minnesota
(93013187)

8:30 a.m.
Symbolic Rees algebras over strongly Fregular rings.
Anurag K. Singh*, University of Michigan
(93013701)

9:00 a.m.
The Plus Closure in Mixed Characteristic.
Raymond Heitmann*, The University of Texas at Austin
(93013877)

9:30 a.m.
A generalization of the AuslanderBuchsbaum formula.
David A Jorgensen*, University of Texas
(93013772)

10:00 a.m.
Test ideals in coordinate rings of Fermat curves.
Moira A. McDermott*, Bowdoin College
(93013746)

10:30 a.m.
Strong and weak Fregularity are equivalent in graded rings.
Gennady Lyubeznik, University of Minnesota
Karen E Smith*, MIT
(93013334)

Friday January 9, 1998, 1:00 p.m.5:50 p.m.
AMS Special Session on Commutative Algebra and Algebraic Geometry, III
Organizers:
Melvin Hochster, University of Michigan, Ann Arbor hochster@math.lsa.umich.edu
Craig L. Huneke, Purdue University hunkek@macaulay.math.purdue.edu

1:00 p.m.
Local Factorization of Birational Morphisms.
Steven D Cutkosky*, University of Missouri
(93014885)

1:30 p.m.
Polyhedral algebras, arrangements of toric varieties, and their groups.
Winfried Bruns, Universit\"at Osnabr\"uck
Joseph Gubeladze*, Georgian Academy of Sciences
(93014497)

2:00 p.m.
A cohomological surjectivity theorem for rational and (some) nonrational singularities.
S\'andor J. Kov\'acs*, Massachusetts Institute of Technology
(93014140)

2:30 p.m.
Very ampleness and higher syzygies of CalabiYau threefolds.
Bangere P Purnaprajna*, University of Missouri
Francisco J Gallego, Universidad Complutense de Madrid
(93014255)

3:00 p.m.
Grothendieck Duality on formal schemes.
Joseph Lipman*, Purdue University
(93014782)

3:30 p.m.
Weierstrass weights of fixed points of an involution.
Christopher W Towse*, Swarthmore College
(93014707)

4:00 p.m.
Differential Operators on Algebraic Varieties and Nakai's Conjecture.
William N. Traves*, MIT and University of Toronto
(93013619)

4:30 p.m.
Characterization of Hilbert functions of standard algebras with Artinian coefficients.
Cristina Blancafort*, Dept. d'Algebra i Geometria, Universitat de Barcelona
Scott R. Nollet, Dept. d'Algebra i Geometria, Universitat de Barcelona
(93013407)

5:00 p.m.
On the Jacobian ideal of a trilinear form.
Giandomenico Boffi, Universita' di Trieste
Winfried Bruns, University of Osnabrueck
Anna Guerrieri*, Purdue University  Universita' di L'Aquila
(93013677)

5:30 p.m.
On the structure of path algebras.
Mordechai Katzman*, CINVESTAV
(930131071)

Saturday January 10, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Commutative Algebra and Algebraic Geometry, IV
Organizers:
Melvin Hochster, University of Michigan, Ann Arbor hochster@math.lsa.umich.edu
Craig L. Huneke, Purdue University hunkek@macaulay.math.purdue.edu

8:00 a.m.
A generalized DedekindMertens lemma and its converse.
Alberto Corso*, Purdue University
(93013999)

8:30 a.m.
On small cofinite irreducibles.
Jee Heub Koh*, Indiana University
(930131029)

9:00 a.m.
The commutative algebra of exterior algebras.
Annetta Aramova, University of Sofia
Luchezar L. Avramov*, Purdue University
J\"urgen Herzog, University of Essen
(93013860)

9:30 a.m.
An Asymptotic Upper Bound for Certain Socle Dimensions.
Carolyn A. Yackel*, University of Michigan
(93013378)

10:00 a.m.
Gorenstein sets of points and the Gale Transform.
David Eisenbud*, MSRI/ UC Berkeley
(930131040)

10:30 a.m.
Linear equivalence of topologies.
Irena Swanson*, New Mexico State University
(93013380)

Saturday January 10, 1998, 1:00 p.m.5:20 p.m.
AMS Special Session on Commutative Algebra and Algebraic Geometry, V
Organizers:
Melvin Hochster, University of Michigan, Ann Arbor hochster@math.lsa.umich.edu
Craig L. Huneke, Purdue University hunkek@macaulay.math.purdue.edu

1:00 p.m.
Gorenstein singularities of finite CohenMacaulay type.
Roger Wiegand*, University of Nebraska
(93013683)

1:30 p.m.
Frobenius Limits of Finite Length Modules over Complete Intersections.
Claudia Miller*, University of Michigan
(930131132)

2:00 p.m.
Some remarks on the relation type conjecture .
Ian M Aberbach*, University of Missouri
(93013686)

2:30 p.m.
The almost complete intersection locus of licci ideals.
Mark Johnson*, University of Arkansas
(93013544)

3:00 p.m.
The degrees of an ideal.
Wolmer V. Vasconcelos*, Rutgers University, New Brunswick
(93013211)

3:30 p.m.
A conjecture on pairs of ideals primary to the maximal ideal of a regular local ring.
J. Bruce Fields*, University of Michigan
(930131104)

4:00 p.m.
Finite Determination of Complexes.
Steven D Cutkosky, University of Missouri
Hema Srinivasan*, University of Missouri
(930131016)

4:30 p.m.
Rees algebras of finitely generated torsionfree modules over a twodimensional regular local ring.
JungChen Liu*, Purdue University
(93013417)

5:00 p.m.
When the symbolic powers of an ideal equal the standard powers.
Susan E Morey*, Southwest Texas State University
(93013246)
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Inquiries: meet@ams.org