Last Updated: March 19, 2007

Conference on Ordered Rings, Baton Rouge 2007 ("Ord07")
Honoring Melvin Henriksen on his 80th Birthday

Dates: April 25 (Wednesday) - April 28 (Saturday), 2007
Location: Louisiana State University, Baton Rouge, Louisiana, USA.

Organizing Committee: Charles N. Delzell delzell@math.lsu.edu, James J. Madden madden@math.lsu.edu

The conference will take place in the Louisiana Emerging Technology Center on the campus of Louisiana State University. See building number 340, map location L24 in the campus map. It begins at 9AM on Wednesday April 25 and ends at 12:30 PM on Saturday. This conference is part of the Consortium for Order in Algebra and Logic (where we got rechristened "OAL07/LSU"). We gratefully acknowledge support from NSF and LSU. (Read the project summary of our proposal to NSF reqesting support for participants.)

View abstracts of talks to be presented

Expected Schedule of Presentations (some details may change)
Time
Presenter
Title

Duration
(minutes)

Wednesday

AM

 9:00 Welcome  
15
9:15 Rick Ball, Univ. Denver P-frames
40
10:15 Daniel Schaub, Univ. d'Angers The Pierce-Birkhoff conjecture and approximate roots of a valuation: Part I
40
11:15 Wolf Iberkleid, Bowling Green State Univ. Classes of clean rings
20
Lunch in conference center, 11:45 -1:30 PM

Wednesday

PM

 1:30 Anthony W. Hager, Wesleyan University Uniform convergence in archimedean l-groups and f-rings
40
2:30 Michael Olubukola Oluwatukesi, Univ. Of Ado-Ekiti, Nigeria Algebraic Properties of the Uniform Closure of Spaces of Continuous Function
20
3:00 Don Johnson Adjoining an identity element to a reduced archimedean f-ring II: Algebras
30
3:40 Karim Boulabiar, Univ. 7 Novembre-Carthage, Tunisia The Arens multiplication in a unital f-ring
20
4:10 Homeira Pajoohesh, Georgia Southern University (Positive) derivations on (l-) rings of matrices
20
4:40 Stuart Steinberg, Univ. Toledo The Henriksen-Isbell-Weinberg proof of McKenna's Theorem on Hilbert's 17th Problem
40
End of Wednesday activities

Thursday

AM

 8:30 Gerard Buskes, Univ. Mississippi A detour via vector lattices to the Loomis-Sikorski Theorem in Boolean algebras
20
9:00 Francois Lucas, Université d'Angers Spectra of ordered groups and rings
30
9:40 Papiya Bhattacharjee, Bowling Green State U.
 Minimal prime elements of an algebraic frame
20
10:10 Danielle Gondard-Cozette, Univ. Paris 6, France On Real Holormorphy Ring of Rings (joint work with Muray Marshall)
30
10:50 Alex Prestel, Universität Konstanz Positive Elimination in Valued Fields
40
Break 11:30AM-1:30PM

Thursday

PM

1:30 Dejan Veluscek, University of Ljubljana Central extensions of *-ordered skew fields (joint work with Igor Klep)
20
2:00 Ashish Kumar Srivastava, Ohio University, Athens Sums of units in right self-injective rings
20
2:30 Manfred Knebusch, Universität Regensburg Positivity and convexity in rings of fractions
40
3:30 Niels Schwartz, Universität Passau Convex extensions of partially ordered polynomial rings
40
4:30 Ralph DeMarr, U. New Mexico Strange Inequalities in a Partially Ordered Linear Algebra
20
5:00 P. Wojciechowski, Univ. Texas at El Paso Application of lattice ordered rings in enumeration of multiplicative bases of matrices
20
End of Thursday lectures. Dinner banquet at Delzell's house 6:30-10:00 PM.

Friday

AM

 8:30 Suzanne Larson, Loyola Marymount University Images and Open Subspaces of SV Spaces
40
9:30 Melvin Henriksen, Harvey Mudd College Open problems on when the ring C(X) contains "many" prime ideals P such that C(X)/P is a valuation domain
20
10:00 Marcus Tressl, Univ. Regensburg Super real closed rings
40
11:00 Jorge Martinez, Univ. of Florida Archimedean frames revisited
40
End of Friday lectures. Friday afternoon free. Go have fun.

Saturday

AM

 9:00 Charles N. Delzell, LSU The two-variable Pierce-Birkhoff conjecture for continuous, piecewise "generalized" polynomial functions on the positive orthant
20
9:30 Eric Zenk, Univ. Denver z-dimension of C(X) revisited
40
10:30 Mark Spivakovsky, Université Paul Sabatier, Toulouse The Pierce-Birkhoff conjecture and approximate roots of a valuation: Part II
40
11:30 Jim McEnerney, Lawrence Livermore National Laboratory Applications of the semi-linear spectrum over an ordered field
20
12:00 Robert Redfield, Hamilton College Super valuation groups
40
End of Scheduled lectures.

Hotel Accommodations and Map of Campus

The hotels below have set aside blocks of rooms for conference participants. Make your reservation by telephoning* the numbers shown. Please identify yourself as a participant of the mathematics conference April 25—April 28. It is important to make reservations as soon as possible. The rates available are in the neighborhood of $70/night; the faculty club is slightly less, but these rates will be given only if you identify yourself as a conference participant.
* Participants who cannot easily use the telephone (e.g., those outside the USA) may make reservations through the organizer, by email (madden@math.lsu.edu).

Lod Cook Conference Center
Tel: (225) 383-2665, (866) 610-2665 (toll free)

LSU Faculty Club
Tel: 225-578-2356
Email: fchotel@lsu.edu

Map of LSU campus. If your Adobe Reader is launched, go to the "View" menu, click on "Rotate View," and then click "Counterclockwise." It might also help to magnify the view to 200%. Points of interest on the map include:

  1. Louisiana Emerging Technology Center (where the Ord007 conference lectures will be held for the first three days of the conference), building number 340; map location L24.
  2. Lod Cook Conference Center (one of two hotels on campus), building number 648; map location H25.
  3. LSU Faculty Club (the other hotel on campus), building number 516; map location H21.
  4. Lockett Hall (LSU's Department of Mathematics, where the Ord007 conference lectures will be held on the last day of the conference), building number 13; map location H17.

Fun