WARNING: Fake accommodation emails are circulating. TCA 2026 does not use external booking services.
Sunday, 28 June 2026
16:00 - 18:00 Registration (Building 2)
18:30 Porto de Honra (Museu Martins Sarmento)
Monday, 29 June 2026
08:45 Opening Ceremony - Don't miss it!
(Room 0.20 - Building 2)
09:00 Mikhail Volkov
(Room 0.20 - Building 2)
09:45 Mai Gehrke
(Room 0.20 - Building 2)
10:30 Coffee-Break
11:00 Thematic Sessions:
0.20 Duality Theory
0.24 Non-Associative Structures
0.31 Cryptographic Functions
12:30 Lunch (Grill, Building 4)
14:00 Thematic Sessions:
Permutation Groups & Transformation Semigroups
15:30 Benjamin Steinberg
(Room 0.20 - Building 2)
16:15 Coffee-Break
17:00 Touristic visit
Tuesday, 30 June 2026
09:00 Mikhailo Dokuchaev
(Room 0.20 - Building 2)
09:45 Marcel Jackson
(Room 0.20 - Building 2)
10:30 Coffee-Break
11:00 Short Presentations: TBA
(Rooms 0.20, 0.24 and 0.31 - Building 2)
12:30 Lunch (Grill, Building 4)
14:00 Thematic Sessions:
0.20 Algebraic Machine Learning
0.24 Synchronizing Groups
0.31 Interaction Algebra & Operator Theory
15:30 Jan Okninski
(Room 0.20 - Building 2)
16:15 Coffee-Break
Wednesday, 1 July 2026
09:00 Stuart Margolis
(Room 0.20 - Building 2)
09:45 John Rhodes
(Room 0.20 - Building 2)
10:30 Coffee-Break
11:00 Short Communications: TBA
(Rooms 0.20, 0.24 and 0.31 - Building 2)
12:30 Lunch (Grill, Building 4)
14:00 Thematic Sessions:
0.20 Free algebras, their automorphisms, derivations and subalgebras
0.24 Semigroup, Automata and Languages
0.31 Thompson's Groups and Languages
15:30 Persi Diaconis
(Room 0.20 - Building 2)
16:15 Coffee-Break
19:00 Banquet (Palácio Vila Flor)
Thursday, 2 July 2026
09:00 Ganna Kudryavtseva
(Room 0.20 - Building 2)
09:45 Anne Schilling
(Room 0.20 - Building 2)
10:30 Coffee-Break
11:00 Thematic Sessions:
0.20 Ehresmann Semigroups
0.24 Hyperbolic Geometry & 3-mainfold Groups
0.31 Artificial Intelligence and Theorem Proving
12:30 Lunch (Grill, Building 4)
14:00 Thematic Sessions:
0.20 Graphs and Algebras
0.24 Numerical Semigroups
0.31Symmetry, Definability and Decidability
15:30 Jorge Almeida
(Room 0.20 - Building 2)
Friday, 3 July 2026
10:00 Farewell