OAL-RAG 2026 Baton Rouge

A conference on Order, Algebra, Logic, and Real Algebraic Geometry

Conference dates: 8:50 AM Friday, May 8 - 12:00 Noon Sunday, May 10, 2026.

(Arrival May 7, departure May 10 or 11.)

Conference location:
The in-person location of the conference is here:

232 Lockett Hall
Department of Mathematics
Louisiana State University
Baton Rouge, Louisiana 70803
USA

The virtual location is here:

https://lsu.zoom.us/j/98815301320?pwd=fHoLnzpUo0utiebbdrxaLqYYZJ4saa.1
Passcode: 950853.

All lectures will be viewable live via Zoom and recorded for later viewing.

Participants:

  1. Mahalia Almeida (Florida Atlantic University).
  2. Rick Ball (University of Denver, Emeritus): \(\lambda\)-repletions in \(\mathbf{W}\) (4:00-4:40 May 8).
  3. Papiya Bhattacharjee (Florida Atlantic University) Concerning Max$_j(L)$ (9:05-9:45 May 8).
  4. Ricardo Carrera (Nova Southeastern University (Florida)); will participate remotely): A classification of hull operators in $\mathbf W$ (3:15-3:45 May 9).
  5. Manuel Lopez del Castillo (Florida Atlantic University): On hyper-complemented rings (2:30-2:50 May 8).
  6. Christian Corbett (Florida Atlantic University): An extension construction for algebraic frames and $M$-frames (1:30-1:50 May 8).
  7. Charles N. Delzell (Louisiana State University).
  8. Sophie Faris (Florida Atlantic University).
  9. José F. Fernando Galván (University Complutense, Madrid (Spain); will participate remotely): Positive semidefinite elements and sums of squares in local henselian rings (1:30-2:10 May 9).
  10. Ebrahim Ghashghaei (Shahid Chamran University of Ahvaz (Iran); will participate remotely).
  11. Danielle Gondard (Institut de Mathématiques de Jussieu-Paris Rive Gauche (France); will participate remotely).
  12. Zbigniew Hajto (Jagiellonian University (Poland); will participate remotely): Some applications of real differential algebra in Galois theory and affine algebraic geometry (9:00-9:40 May 9).
  13. James Klinkenberg (Florida Atlantic University): Weak disjointification and Max$_d(L)$ (2:00-2:20 May 8).
  14. Wieslaw Kubis (Czech Academy of Sciences (Czech Republic); will participate remotely): Chain union closures and convexity (with Kuhlmann, below).
  15. Franz-Viktor Kuhlmann (University of Szczecin (Szczecin, Poland); will participate remotely): Chain union closures and convexity (11:00-11:40 May 9).
  16. Ramiro H. Lafuente-Rodriguez (University of South Dakota): The Alexandroff property in the spectrum and extremal refinements of algebraic frames (10:55-11:25 May 8).
  17. James J. Madden (Louisiana State University): The free weak-unital vector lattice over a vector lattice (2:30-3:00 May 9).
  18. Jim McEnerney (will participate remotely).
  19. Warren McGovern (Florida Atlantic University, Wilkes Honors College): Algebraic frames (10:00-10:40 May 8).
  20. Andrew Moshier (Chapman University; will participate remotely).
  21. Aysha Nuhuman (Florida Atlantic University).
  22. Ricardo Jesús Palomino Piepenborn (United Kingdom; will participate remotely).
  23. Anand Pillay (Notre Dame University; will participate remotely): Groups definable in real closed fields with a generic derivation (10:00-10:40 May 9).
  24. Eric Schneider (Louisiana State University).
  25. Philip Scowcroft (Wesleyan University; will participate remotely).
  26. John Stokes-Waters (University of Manchester, United Kingdom; will participate remotely): A model companion for Abelian lattice-ordered groups with a valuation (10:00-10:30 May 10).
  27. Peter Stringfield (Louisiana State University).
  28. Marcus Tressl (University of Manchester, United Kingdom; will participate remotely): Every join semilattice with smallest element is isomorphic to the semilattice of compact open sets of some space (9:00-9:40 May 10).
  29. Joanne Walters-Wayland (Chapman University): The scaffolding of a completely regular frame (3:10-3:50 May 8).
  30. Brian Wynne (Lehman College, City University of New York): More existentially closed prime-model extensions of Archimedean lattice-ordered groups with strong unit (10:45-11:25 May 10).

Schedule of Talks

Here is the schedule of talks.

Abstracts of Talks

Here are the Abstracts (which were due on due April 15, 2026).

Registration

Send email to Charles N. Delzell: delzell@math.lsu.edu.

Conference Hotel

The conference hotel is:

The Cook Hotel at LSU
3848 West Lakeshore Drive
Baton Rouge, Louisiana 70808
1-225-383-COOK (2665)
www.thecookhotel.com

We are reserving a block of rooms at Cook (with check-in May 7 after 3:00 PM, and check-out May 10 or 11 by 11:00 AM). Details coming soon. Let the organizers know if you wish to arrive or depart on days other than the above.

While we have no funds for your accommodations during the conference, we can arrange for a savings of \$30-\$40 per night if the payment for the room originates with LSU. To make this happen, Dr. Delzell can accept money from you via Venmo (@Charles-Delzell) or Paypal (using his address: delzell@math.lsu.edu). Any money received will be deposited in an LSU account and used to pay the hotel. Alternatively, you may write a check payable to "LSU" and send it to Charles Delzell at the address below, to be received by us no later than Monday, April 6, 2026.

Here are the prices if you pay LSU:

King Bed: \$126/night.
Two beds: \$126/night.

You can see pictures of these types of rooms at www.thecookhotel.com.
Each additional person in a room beyond the first two will pay an extra \$12/night. Prices include a hot breakfast.
The hotel will hold this block of rooms for us until Tuesday, April 7, 2026, after which it will release any unreserved rooms for sale to the general public.

If you are willing to pay the normal (higher, non-LSU) rate on hotel rooms, you may pay the hotel directly (by credit card or other means), but no later than April 7.

Registration Fee

Registration fee: \$50.00. This will cover refreshments served during the conference and a catered dinner at the Delzells' house on Friday. The fee will be collected on the first day of the conference.

Travel

How to get to LSU: If you let us know several days in advance when your plane will land at the Baton Rouge airport (BTR), we'll try to pick you up. A taxi, if used, costs approximately \$25-\$30 from the Baton Rouge airport to the Cook Hotel. Uber costs \$20-\$30. If you're driving to Baton Rouge, check Google maps.

Organizers

Charles N. Delzell (delzell@math.lsu.edu; 225-439-3952 (cell)).
James J. Madden (madden@math.lsu.edu; 225-978-3525 (cell)).

Mailing address:
Department of Mathematics
Louisiana State University
Baton Rouge, LA 70803
USA

Last updated May 7, 2026.