INTERNATIONAL CONFERENCE AND WORKSHOP ON VALUATION THEORY

Wednesday, July 28, 9 to 9:15am
Opening of Conference: Welcoming words and general information.

TIMES	Wednesday July 28	Thursday July 29	Friday July 30
9:15-10:05	Eberhard Becker Valuations in real algebra and real algebraic geometry	Victoria Powers Real holomorphy rings and sums of 2n-th powers in fields and rings	Tom Craven *-valuations and hermitian forms on skew fields
10:05-10:25	COFFEE BREAK	COFFEE BREAK	COFFEE BREAK
10:25-11:15	Ana Reguera Valuations on surfaces	Dale Cutkosky Local and global monomialization of morphisms	Nikolai Dubrovin Spectrum and Ideal Theory of Chain Rings
11:15-11:25	Short Break	Short Break	Short Break
11:25-12:15	Patrick Popescu-Pampu Approximate roots	Adrian Wadsworth Valuation theory on finite-dimensional division algebras	Niels Schwartz Real closed rings
12:15-2:00	LUNCH BREAK	LUNCH BREAK	LUNCH BREAK
2:00-2:50	Patrick Speissegger Valuation theory of polynomially bounded o-minimal structures	Yuri Ershov Model theory of valued fields	Marius van der Put Valuation theory in rigid geometry and curves over valuation rings I
2:50-3:00	Short Break	Short Break	Short Break
3:00-4:00	Joachim Graeter Dubrovin valuation rings and orders in central simple algebras	Tohsuke Urabe Resolution of singularities of germs in characteristic positive associated with valuation rings of iterated divisor type	Thomas Scanlon Quantifier elimination for the relative Frobenius
4:00-4:30	COFFEE BREAK	COFFEE BREAK	COFFEE BREAK
4:30-5:00 or 4:30-5:20	Peter Vamos Ordered Grothendieck groups for valuation domains ends at 5:00	Claus Scheiderer Principal homogeneous spaces over function fields of p-adic curves ends at 5:00	Florian Pop Birational anabelian geometry ends at 5:20
at night	5:00-9:00 Informal gathering on the outdoor terrace of Louis'	7:00 and 9:00 Special screening of two Saskatchewan made films at the Broadway theatre	7:30 Public talk: Paulo Ribenboim These marvelous prime numbers Room: Phys 107, Physics Building

Times	Session I	Session II
9:00-9:15	Gilbert Stengle Alternative Witnesses of Definiteness	Maria Jesus de la Puente Baer-Krull theorems for the complex spectrum of a field
9:15-9:20	Short Break	Short Break
9:20-9:35	Jean-Philippe Monnier Signature Map and Unramified Cohomology	Luc Belair Model theory of pseudovaluation domains
9:35-9:40	Short Break	Short Break
9:40-9:55	Antoine Ducros Rational points on the special fibre of a scheme over a valuation ring	Mohammad Mahdavi-Hezavehi Valuations and Maximal Subgroups of D*
9:55-10:00	Short Break	Short Break
10:00-10:15	Helene Pennaneac'h Algebraically constructible homology	Hidetoshi Marubayashi A classification of primary ideals in a non commutative valuation ring
10:15-10:20	Short Break	Short Break
10:20-10:35	Tara L. Smith Generalized Orderings on Fields	Enver Osmanagic Prime Segments in Simple Artinian Rings
10:35-10:50	BREAK	BREAK
10:50-11:15	Francois Lucas The order structure of real spectra	Johan Huisman The algebraic fundamental group of real algebraic curves
11:15-11:20	Short Break	Short Break
11:20-11:45	Charles N. Delzell Nonexistence of C^infinity or formal power series variation in solutions to Hilbert's 17th problem	Gerard Leloup Formal power series with cyclically ordered exponents
11:45-11:50	Short Break	Short Break
11:50-12:15	Francesca Acquistapace A strict positivstellensatz for global analytic functions	Henri Lombardi Constructive Theory of Pruefer Rings

2:30-3:20	Sibylla Priess-Crampe Generalized ultrametric spaces
3:20-3:30	Short Break
3:30-4:00	Tony Seda The Fixed-Point Theorem of Priess-Crampe and Ribenboim in Computational Logic
4:00-4:30	COFFEE BREAK
4:30-5:30	Peter Roquette The history of valuation theory
5:30-7:30	BREAK
7:00-open end	BANQUET Marquis Hall (number 5 on the on-line campus map)

TIMES	Monday August 2	Tuesday August 3	Wednesday August 4
9:15-10:05	John Shackell Hardy Fields and Applications to Symbolic Asymptotics	Erwin Schoerner Ultrametric fixed point theorems and applications	Vincent Cossart Abhyankar's irreducibility criterion: a geometric point of view
10:05-10:25	COFFEE BREAK	COFFEE BREAK	COFFEE BREAK
10:25-11:15	Marius van der Put Valuation theory in rigid geometry and curves over valuation rings II	Gilles Christol Radius of convergence of differential modules over valued rings: old and new	James Madden The Pierce-Birkhoff Conjecture
11:15-11:25	Short Break	Short Break	Short Break
11:25-12:15	Mohamed Saidi On the specialisation homomorphism of fundamental groups for algebraic curves in characteristic p>0	Shreeram Abhyankar The role of valuation theory in the resolution of singularities	Jochen Koenigsmann Galois characterization of henselian fields
12:15-2:00	LUNCH BREAK	LUNCH BREAK	LUNCH BREAK
2:00-2:50	Olivier Piltant Graded algebra of a valuation	Roland Huber Swan representations and rigid analytic curves	Jan Minac Group cohomology and field theory
2:50-3:00	Short Break	Short Break	Short Break
3:00-4:00	Urs Hartl Rigid analytic Picard varieties, Neron-Severi Group, line bundles on polystable fibration of formal schemes	Michel Coste Real spectrum, finiteness results and definable trivialization in o-minimal structures	Isabelle Bonnard Algebraically constructible functions
4:00-4:30	COFFEE BREAK	COFFEE BREAK	COFFEE BREAK
4:30-5:00	Sudesh Khanduja Valuations of function fields and their applications	Hagen Knaf Regularity on varieties over non-noetherian valuation rings	Yannick Henrio Order p automorphisms of p-adic annuli
5:00-5:10	Short Break	Short Break	Short Break
5:10-6:00	Carlos Andradas Complexity of global semianalytic sets	Fred van Oystayen Valuations on quantum algebras	Ron Brown Frobenius groups: it's all algebraic number theory

10:00-10:50	Marius van der Put Dessins d'enfants and the Riemann - Hilbert problem
10:50-11:00	BREAK
11:00-11:50	Shreeram Abhyankar Galois Theory of Drinfeld Modules
11:50-1:15	LUNCH BREAK
1:15-1:45	Ruth Michler Invariants of Isolated Singularities
1:45-1:50	Short Break
1:50-2:20	Serban Basarab Arboreal structures on Pruefer domains and applications
2:20-2:25	Short Break
2:25-2:55	Herve Perdry A generalization of Hensel's Lemma
2:55-3:00	Short Break
3:00-3:30	Konstantin Ponomaryov Covers of algebraic varieties and elimination of quantifiers in local fields
3:30-3:40	BREAK
3:40-4:10	Barry Green Automorphisms of formal power series rings over a valuation ring
4:10-4:15	Short Break
4:15-5:05	Alexander Prestel Valuation theory, Positivity and the Moment Problem
5:05-5:10	Short Break
5:10-6:00	Peter Roquette On the history of the notion "place" of a field

9:30-10:20	Franz-Viktor Kuhlmann Valuation theoretic and model theoretic aspects of local uniformization, I
10:20-10:30	Short break
10:30-11:20	Salma Kuhlmann Ordered Exponential Fields, I
11:20-11:30	Short Break
11:30-12:20	Bernard Teissier Valuations, deformations, and toric geometry, I
12:20-1:30	LUNCH BREAK
1:30-2:20	Eberhard Becker The space of real places and bounds for the length of sums powers in function fields
2:20-2:25	Short Break
2:25-3:15	Matthias Aschenbrenner First steps towards a model theory of Hardy fields
3:15-4:00	Coffee and cake in honour of Shreeram Abhyankar's birthday
4:00-5:00	Mathematics Department Colloquium Hans Schoutens The image of an analytic map; the ultrametric case

TIMES	Session I	Session II
9:30 - 10:00	Guillermo Moreno-Socias Testing analytic irreducibility: an implementation	Sudesh Kaur Khanduja A study of valuations of K(x) and minimal pairs

10:10-11:00	Murray Marshall Real spectrum of the universal enveloping algebra
11:00-11:10	Short break
11:10-12:00	Mark Spivakovsky Local uniformization in arbitrary characteristic, I

TIMES	Session I	Session II
12:10-1:00	Fred van Oystayen Shopping in my work	Gerard Leloup AKE theorem for pairs of fields

9:30-10:00	Luck Darniere Model theory and Hasse principle
10:00-10:10	Short break
10:10-11:00	Franz-Viktor Kuhlmann Valuation theoretic and model theoretic aspects of local uniformization, II
11:00-11:10	Short break
11:10-12:00	Salma Kuhlmann Ordered Exponential Fields, II
12:00-1:15	LUNCH BREAK
1:15-1:55	Ludovico Pernazza An Artin-Lang property for germs of C^infinity functions
1:55-2:00	Short Break
2:00-2:50	Mark Spivakovsky Local uniformization in arbitrary characteristic, II
2:50-3:00	Short Break
3:00-3:50	Bernard Teissier Valuations, deformations, and toric geometry, II
3:50-4:00	Short Break
4:00-4:50	Pedro Gonzalez Perez On Toric Resolution of Quasi-ordinary Surface Germs

10:00-10:45	Konstantin Ponomaryov Elimination of ramification in extensions of discretely valued fields
10:45-11:00	Break
11:00-11:45	Hagen Knaf Divisor reduction on regular curves over valuation rings and an application to valued function fields
11:45-2:00	LUNCH BREAK
2:00-2:50	Matthias Aschenbrenner First steps towards a model theory of Hardy fields, II
2:50-3:00	Short Break
3:00-3:45	Marcus Tressl The real spectrum of continuous, definable functions in o-minimal structures
3:45-4:00	Break
4:00-4:50	Salma Kuhlmann Ordered Exponential Fields, III

2:00-4:30

Problem session and open discussion

Last update: September 27, 1999