AMS Meeting Program by Special Session
Current as of Tuesday, April 12, 2005 15:08:48
Program 
Deadlines 
Inquiries: meet@ams.org
1991 Joint Mathematics Meetings
San Francisco, CA, January 1619, 1991
Meeting #863
Associate secretaries:
Andy R Magid, AMS amagid@ou.edu
Kenneth A Ross, MAA ross@math.uoregon.edu
AMS Special Session on Real Algebraic Geometry

Wednesday January 16, 1991, 1:15 p.m.5:05 p.m.
AMS Special Session on Real Algebraic Geometry, I

1:15 p.m.
Lower bounds for computing with integer inputs.
Michael D. Hirsch*, University of California, Berkeley
(86314312)

1:45 p.m.
Witt group of curves over global fields.
R. Parimala*, Tata Institute of Fundamental Research, India and University of California, Berkeley
R. Sridharan, Tata Institute of Fundamental Research, India and University of California, Berkeley
(86314276)

2:15 p.m.
Reduced norm square of Pfaffian.
R. Sridharan*, Tata Institute of Fundamental Research, India
(86316277)

2:45 p.m.
Semirigid functions.
Manfred Knebusch*, University of Regensburg, Federal Republic of Germany
(86314853)

3:15 p.m.
The PierceBirkhoff conjecture for curves.
Murray Marshall*, University of Saskatchewan
(8631234)

3:45 p.m.
Topological equivalence of real binary forms.
David Weinberg*, Texas Tech University
Dave Witte, Williams College
(86357511)

4:15 p.m.
Order of contact of points in the real spectrum.
James J. Madden*, Louisiana State University, Baton Rouge
(86314407)

4:45 p.m.
On analytically varying solutions to Hilbert's 17th problem.
Charles N. Delzell*, University of California, Berkeley
(86314743)

Thursday January 17, 1991, 7:00 a.m.9:50 a.m.
AMS Special Session on Real Algebraic Geometry, II

7:00 a.m.
Complexity of algorithms in real algebraic geometry.
MarieFrancoise Roy*, University of Rennes I, France
(86314365)

7:30 a.m.
Some computations in robotics from the real algebraic geometry.
Maria J. Gonz\'alez Lop\'ez, University of Cantabria, Spain
Tom\'as Recio*, University of Cantabria, Spain
(86314587)

8:00 a.m.
Orders on not necessarily formally real fields.
Ron Brown*, University of Hawaii, Honolulu
(86312546)

8:30 a.m.
Matrix orderings for noncommutative rings.
Thomas C. Craven*, University of Hawaii, Honolulu
(86314374)

9:00 a.m.
Orderings on noncommutative rings.
Victoria Powers*, Emory University
(86314533)

9:30 a.m.
Signatures of higher level on a commutative ring.
Susan Barton*, Pennsylvania State University, Media
(86313537)

Friday January 18, 1991, 7:00 a.m.9:50 a.m.
AMS Special Session on Real Algebraic Geometry, III

7:00 a.m.
Robinson's form and Hilbert's theorem.
Bruce Reznick*, University of Illinois, UrbanaChampaign
(86314874)

7:30 a.m.
Witt rings under odd degree extensions.
Robert W. Fitzgerald*, Southern Illinois University, Carbondale
(86311183)

8:00 a.m.
Quaternion identities.
Joseph Yucas*, Southern Illinois University, Carbondale
(86312373)

8:30 a.m.
Pro2Demuskin groups of rank aleph_0 as Galois groups of maximal 2extensions of fields.
Jan Minac, University of Western Ontario
Roger Ware*, Pennsylvania State University, University Park
(86312281)

9:00 a.m.
Witt rings and Galois groups.
Tara L. Smith*, Ohio State University, Columbus
(86312283)

9:30 a.m.
Stable decompositions of division algebras with involution.
Maurice Chacron, Carleton University
H\'el\`ene Dherte, University Catholique de Louvain, Belgium
JeanPierre Tignol*, University Catholique de Louvain, Belgium
Adrian Wadsworth, University of California at San Diego, La Jolla
(86316381)
Inquiries: meet@ams.org