Alberta-Montana Combinatorics & Algorithms Days at BIRS (2023)

painting of Banff's Mt. Rundle from a canoe on Lower Vermilion Lake (W. Holzmann 2010-08-16/ImageMagick -paint 6)        

Place & Date

BIRS, Banff, Alberta, Friday June 23 - Sunday June 25, 2023


Invited speakers

Location & Registration

All events will be held at the Banff International Research Station in Banff, Alberta, Canada.

Details about the conference facilities and access to Banff is at their web site and also given on registering. For example, you can find out that to reach BIRS, you may fly to Calgary and take an airporter shuttle to Banff. Participation is by invitation only. Once the organizers have finalized the participant list, BIRS should have sent emails with all relevant information to participants.


All talks are in room TCPL 201. The coffee breaks will held in the TCPL Foyer. Meals are provided by the workshop at the usual venue for these in the Vistas Dining Room located on the top floor of the Sally Borden Building. Template for abstract submission by email to Hadi Kharaghani at: kharaghani at uleth dot ca

For a printable version of the program see the first page of the Abstracts.

The slides of the talks are/will be posted here (link does not exist yet).

Friday June 23Event
by eveningCheck-in & Registration at the front desk in the Professional Development Centre

Saturday June 24Speaker or EventTitle & Abstract
8:20-8:25Welcome address by BIRS staff
8:30-9:00Davoud Abdi, U. of CalgaryCounterexamples to Conjectures of Thommassé and Bonato-Tardif, what is next?
9:00-9:30 Martin Müller, U. of AlbertaTowards Efficient First-Principles Algorithms for Sums of Combinatorial Games
9:30-10:00Xinyue Chen, U. of Alberta
presented by Ryan Hayward
Exploring Hex Solving with the Benze Hex Solver and DFPN Algorithm
10:00-10:30Coffee break
10:30-11:30Svenja Huntemann, Concordia U. of EdmontonValues, Temperatures, and Enumeration of Placement Games
11:30-12:00Mahya Jamshidian, U. of AlbertaOn improving approximation factors for Minimum Sum of Radii, Diameters, and Squared Radii
1:00-1:20Group Photo in TCPL Foyer near the talk venue (or outside weather permitting)
1:30-2:30Stephanie van Willigenburg, U.B.C.The (3+1)-free conjecture of chromatic symmetric functions
2:30-3:00Zac Friggstad, U. of AlbertaApproximating Minimum-Sum Colourings of Chordal Graphs
3:00-3:30Coffee Break
3:30-4:00 Caleb Van't Land, U. of Lethbridge A Maximal Set of Unbiased Butson Hadamard Matrices
4:00-5:00Dave Witte Morris, U. of LethbridgeOn vertex-transitive graphs with a unique hamiltonian circle
5:00-5:30Van Magnan, U. of MontanaFlower Power
5:30-6:00Amarpreet Rattan, Simon Fraser U.Parking functions, trees and factorizations in the symmetric group

Sunday June 25Speaker or EventTitle & Abstract
8:30-9:30Cory Palmer, U. of MontanaA survey of extremal co-degree problems for hypergraphs
9:30-10:00Anna Halfpap, U. of MontanaGeneral Properties of the Positive Co-degree Turán Number
10:00-10:30Coffee break (note: room check out is by 11:00)
10:30-11:30Rei Safavi-Naini, U. of CalgaryKey agreement for long term secure communication
11:30-12:00Daniel P. Johnston, Trinity College, Hartford, CTRainbow Saturation

Organizing Committee & Contacts

The organizing committee is: If you have questions please send an e-mail to Hadi Kharaghani at: kharaghani at uleth dot ca


The group photo at BIRS website (local copy here).

Last update: 2023 July 11