Proof Complexity 2025

11-13 August 2025
University of Oxford

Proof complexity is a vibrant area in the intersection of computational complexity, algorithms and mathematical logic exploring the inherent difficulty of proving mathematical theorems. This workshop aims to cover both traditional topics and emerging trends in the field such as lower bounds on lengths of proofs, bounded arithmetic, model theory & forcing, SAT & QBF solving, connections to TFNP and algebraic complexity, lifting theorems and meta-mathematics of complexity theory.

The workshop will take place on 11-13 August at the University of Oxford. The program will consist of talks by selected speakers and will include ample time for discussions.

Previous edition of the workshop: Proof Complexity 2024.

To register for the workshop, please use the following Registration Form.

Registration is now closed. If you wish to participate and have not yet registered, please contact the organizers.

Program

Talks are either 25 or 40 minutes in total. Speakers are asked to leave at least 3 minutes at the end of their talk for questions.
9:30-10:00 Monday Morning Coffee
Monday: Session 1 — 10:00-11:30
40 min Algebraic proof complexity: state of the art
Iddo Tzameret
25 min Improved lifting theorem
Shuo Pang
25 min The proof analysis problem
Noel Arteche
Monday: Session 2 — 14:00-15:30
40 min Monotone circuit complexity of perfect matching
Bruno Cavalar
25 min Formalizing the AKS primality algorithm in bounded arithmetic
Raheleh Jalali
25 min Pseudodeterministic communication complexity
Anastasia Sofronova
15:30-16:00 Monday Afternoon Coffee Break
Monday: Session 3 — 16:00-17:30
40 min Provability of Circuit Size Hierarchy in Constant Lines of $\mathsf{VPV}$
Marco Carmosino
25 min A Logspace Constructive Proof of $\mathsf{L} = \mathsf{SL}$
Antonina Kolokolova
25 min Lower Bounds against the Ideal Proof System in Finite Fields
Tal Elbaz
9:30-10:00 Tuesday Morning Coffee
Tuesday: Session 1 — 10:00-11:30
40 min Local Enumeration, SSETH, and Depth-3 Lower Bounds
Navid Talebanfard
25 min Bounded-Assembler: Programming in Bounded Arithmetic
Stefan Grosser
25 min Symmetric Proofs in the Ideal Proof System
Benedikt Pago
Tuesday: Session 2 — 14:00-15:30
40 min Recent advances in Resolution over parities
Dmitry Itsykson
25 min Uniform Counting Principle v.s. injective PHP in the relativized bounded arithmetic $T_{2}(R)$
Eitetsu Ken
25 min Resolution Proof Complexity for Embedding a Length-$(n + 1)$ Path into Expanders.
Aleksandr Shekhovtsov
15:30-16:00 Tuesday Afternoon Coffee Break
Tuesday: Session 3 — 16:00-17:30
25 min Weak Rank Principle I
Svyatoslav Gryaznov
25 min Weak Rank Principle II
Hanlin Ren
40 min Open Problems Session
Chair: Nicola Galesi
9:30-10:00 Wednesday Morning Coffee
Wednesday: Session 1 — 10:00-11:30
40 min On the consistency of stronger lower bounds for NEXP
Neil Thapen
25 min $\mathsf{AC}[p]$-Frege Cannot Efficiently Prove that Constant-Depth Algebraic Circuit Lower Bounds are Hard
Jiaqi Lu
25 min Lower bounds for CSP hierarchies through ideal reduction
Jonas Conneryd
Wednesday: Session 2 — 14:00-15:30
40 min Searching for falsified clauses in random $(\log n)$-CNFs is hard for randomized communication
Dmitry Sokolov
25 min Jump Operators
Erfan Khaniki
25 min Towards an Alternative Foundation for Feasible Mathematics
Amir Tabatabai
15:30-16:00 Wednesday Afternoon Coffee Break
Wednesday: Session 3 — 16:00-17:40
25 min Wide Limits: An Alternative View of Forcing in Bounded Arithmetic
Ondrej Jezil
25 min Provably total functions in the polynomial hierarchy
Christophe Marciot
25 min Stifling the non-locality of parities
Suhail Sherif
25 min Towards complex analysis in $\mathsf{VTC}^0$
Emil Jeřábek

Venue

Lecture Theatre B (LTB) & Atrium, Wolfson building, Department of Computer Science, University of Oxford.
Address: Wolfson building, Parks road, Oxford, OX1 3QD, UK
How to get here

Accommodation

Oxford colleges provide accommodation for visitors in August, see e.g. Keble College (nearest to the department), Wolfson College or St Anne's College. To book a room please use conference-oxford or the website of the college of your choice. Hotels and AirBnB can offer a great alternative.

Speakers

Organizers: