AMS Sectional Meeting Program by Special Session
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1996 Spring Southeastern Sectional Meeting
Baton Rouge, LA, April 1921, 1996
Meeting #911
Associate secretaries:
Robert J Daverman, AMS
daverman@math.utk.edu
Special Session on Real Algebraic Geometry and Ordered Algebraic Structures

Wednesday April 17, 1996, 1:30 p.m.4:20 p.m.
Special Session on Real Algebraic Geometry and Ordered Algebraic Structures, I
Room E113, Pleasant Hall
Organizers:
Charles N. Delzell, Louisiana State University
James Joseph Madden, Louisiana State University
Scott Woodward, Southern University

1:30 p.m.
On bounding the Betti numbers and computing the Euler characteristic of semialgebraic sets.
Saugata Basu*, Courant Institute of Mathematical Sciences, New York University
(91112212)

2:00 p.m.
Complexification and degree of a semialgebraic set.
MarieFrancoise Roy*, University of Rennes I, France
(91111211)

2:30 p.m.
Real factors of analytic polynomials and an application to reparametrization algorithms of real curves.
Tomas Recio*, University of Cantabria, Spain
J. R. Sendra, University Alcala de Henares, Spain
(91114190)

3:00 p.m.
Virtual roots of real polynomials and its applications.
Laureano GonzalezVega*, University of Cantabria, Spain
Henri Lombardi, University of Besancon, France
Louis Mahe, University of Rennes I, France
(91114193)

3:30 p.m.
Critical point methods in computational real algebraic geometry.
Victoria Ann Powers*, Emory University
Eberhard Becker, University of Dortmund, Germany
Thorsten Woermann, University of Dortmund, Germany
(91111139)

4:00 p.m.
On $f$modules over partially ordered rings.
James Joseph Madden, Louisiana State University, Baton Rouge
Scott Woodward*, Southern University
(91106123)

Thursday April 18, 1996, 9:00 a.m.11:20 a.m.
Special Session on Real Algebraic Geometry and Ordered Algebraic Structures, II
Room E113, Pleasant Hall
Organizers:
Charles N. Delzell, Louisiana State University
James Joseph Madden, Louisiana State University
Scott Woodward, Southern University

9:00 a.m.
Signature of higher level in a commutative ring.
Leslie J. Walter*, University of Saskatchewan
(91113228)

9:30 a.m.
The nonreduced order spectrum of a commutative ring.
Gilbert A. Stengle*, Lehigh University
James F. McEnerney, Princeton University
(91106132)

10:00 a.m.
The $17$th Hilbert problem for real analytic functions.
Piotr Jaworski*, University of Warsaw, Poland
(9111497)

10:30 a.m.
Realnormal field extensions.
M. E. Alonso, University Complutense de Madrid, Spain
M. Pilar Velez*, University Complutense de Madrid, Spain
(91114257)

11:00 a.m.
On separation of semialgebraic sets.
C. Andradas, University Complutense de Madrid, Spain
F. Acquistapace*, University of Pisa, Italy
F. Broglia, University of Pisa, Italy
(91114137)

Thursday April 18, 1996, 1:30 p.m.4:50 p.m.
Special Session on Real Algebraic Geometry and Ordered Algebraic Structures, III
Room E113, Pleasant Hall
Organizers:
Charles N. Delzell, Louisiana State University
James Joseph Madden, Louisiana State University
Scott Woodward, Southern University

1:30 p.m.
Boolean methods in the theory of quadratic forms.
M. A. Dickmann*, University of Paris VII, France
F. Miraglia, University of Sao Paulo, Brazil
(91114253)

2:00 p.m.
Continuous ultraproducts.
Norman L. Alling*, University of Rochester
(9115445)

2:30 p.m.
Remarks on the prime spectra of latticeordered abelian groups.
Roberto Cignoli, University of Buenos Aires, Argentina
Daniel Gluschankof*, University of Angers, France
Francois Lucas, University of Angers, France
(91106135)

3:00 p.m.
A new look at biseparating maps {\rm II}.
Melvin Henriksen*, Harvey Mudd College
(91106117)

3:30 p.m.
Some results on ultrametric spaces.
Sybilla PriessCrampe*, University of Munich, Germany
(91112267)

4:00 p.m.
The exponential rank of nonarchimedean exponential fields.
Franz Viktor Kuhlmann*, University of Heidelberg, Germany
Salma Kuhlmann, University of Heidelberg, Germany
(91114125)

4:30 p.m.
On residually realclosed henselian fields.
Danielle J. GondardCozette*, University of Paris VI, France
Eberhard Becker, University of Dortmund, Germany
Ralph Berr, University of Dortmund, Germany
(91112110)

Friday April 19, 1996, 9:00 a.m.11:50 a.m.
Special Session on Real Algebraic Geometry and Ordered Algebraic Structures, IV
Room E113, Pleasant Hall
Organizers:
Charles N. Delzell, Louisiana State University
James Joseph Madden, Louisiana State University
Scott Woodward, Southern University

9:00 a.m.
Classification of real algebraic curves on toric varieties.
Anatoly Korchagin*, Administrators for the Professions, Brooklyn, New York
(91113268)

9:30 a.m.
Topological control of spatial real algebraic surfaces.
Benoit Chevallier*, University Toulouse le Mirail, France
(9111466)

10:00 a.m.
Rokhlin conjecture and quotients of real algebraic surfaces by complex conjugation.
Sergey Mikhailovich Finashin*, Middle East Technical University, Turkey
(9111458)

10:30 a.m.
Rigid isotopies of real algebraic curves on a hyperboloid.
Victor Ivanovich Zvonilov*, Syktyvkar University, Russia
(9111457)

11:00 a.m.
Combinatorial patchworking real algebraic surfaces.
I. V. Itenberg*, University of Rennes I, France
(9111486)

11:30 a.m.
On the decomposing algebraic curves.
G. M. Polotovskii*, Nizhny Novgorod University, Russia
(91114103)

Saturday April 20, 1996, 2:15 p.m.6:05 p.m.
Special Session on Real Algebraic Geometry and Ordered Algebraic Structures, V
Room 120, A. P. Tureaud Building
Organizers:
Charles N. Delzell, Louisiana State University
James Joseph Madden, Louisiana State University
Scott Woodward, Southern University

2:15 p.m.
Localglobal principles over real function fields.
Claus Scheiderer*, University of Regensburg, Germany
(91114109)

2:45 p.m.
Pr\"ufer extensions.
Manfred Knebusch*, University of Regensburg, Germany
Digen Zhang, University of Regensburg, Germany
(9111415)

3:15 p.m.
Noetherian space of abstract locally Nash sets.
Ronan Quarez*, University of Rennes 1, France
(91114129)

3:45 p.m.
Epimorphism of reduced partially ordered rings.
Niels C. Schwartz*, University of Passau, Germany
(9111499)

4:15 p.m.
Algebraic moduli of real algebraic curves.
Johannes Huisman*, University of Rennes I, France
(9111496)

4:45 p.m.
Radial vector fields and Poincar\'eHopf theorem.
JeanPaul Brasselet*, CIRM  Luminy, France
(91114148)

5:15 p.m.
Work of L. Noirel on semialgebraic realizations of compact abstract stratified sets.
David J.A. Trotman*, University of Provence, France
(91114203)

5:45 p.m.
Holomorphic rank two vector bundles on blowups.
Elizabeth Terezinha Gasparim*, CINVESTAV del IPN, Mexico
(9111479)

Sunday April 21, 1996, 8:30 a.m.10:50 a.m.
Special Session on Real Algebraic Geometry and Ordered Algebraic Structures, VI
Room 120, A. P. Tureaud Building
Organizers:
Charles N. Delzell, Louisiana State University
James Joseph Madden, Louisiana State University
Scott Woodward, Southern University

8:30 a.m.
Elliptic curves and level of quartics.
Louis Mahe*, University of Rennes I, France
(91114136)

9:00 a.m.
About the image of the signature map in the two dimensional case.
JeanPhilippe Monnier*, University of Rennes 1, France
(91114121)

9:30 a.m.
Exponentiation in power series fields.
Salma Kuhlmann*, University of Heidelberg, Germany
Franz Viktor Kuhlmann, University of Heidelberg, Germany
Saharon Shelah, Hebrew University of Jerusalem, Israel
(91112124)

10:00 a.m.
Old and new constructions of Hilbert identities.
Bruce A. Reznick*, University of Illinois, UrbanaChampaign
(91111114)

10:30 a.m.
A complex version of the BaerKrull theorems.
Gregory W. Brumfiel, Stanford University
Maria Jesus de la Puente*, Universidad Complutense, Spain
(9111213)
Inquiries: meet@ams.org