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FSTTCS 2025

45th IARCS Annual Conference on
Foundations of Software Technology and Theoretical Computer Science

Wednesday, December 17, 2025
0900 1000 Invited Talk 1
CHAIR: TBA
VENUE: TBA
Nicole Immorlica
TBA
1000 – 1030 Break
1030 – 1130 Session A1 (Quantum Computing I)
CHAIR: TBA
VENUE: TBA
Session B1 (Automata)
CHAIR: TBA
VENUE: TBA
Scott Aaronson, Sabee Grewal, Vishnu Iyer, Simon Marshall
EXP: QMA With Hidden Variables and Non-collapsing Measurements
Ayaan Bedi and Karoliina Lehtinen
Explorability in Pushdown Automata
Elena Grigorescu, Vatsal Jha, Eric Samperton
On the hardness of approximating distances of quantum codes
Shibashis Guha, Anirban Majumdar, Prince Mathew and A V Sreejith
Scalable Learning of One-Counter Automata via State-Merging Algorithms
Erika Andersson, Akshay Bansal, James Peat, Jamie Sikora, Jiawei Wu
Quantum protocols for Rabin oblivious transfer
1130 – 1140 Break
1140 – 1240 Session A2 (Algebraic & Boolean Complexity)
CHAIR: TBA
VENUE: TBA
Session B2 (Probabilistic Systems )
CHAIR: TBA
VENUE: TBA
Ramya C., Pratik Shastri
On the Hardness of Order Finding and Equivalence Testing for ROABPs
Laurent Bienvenu, Hugo Gimbert and Subin Pulari
The Agafonov and Schnorr-Stimm theorems for probabilistic automata
G. V. Sumukha Bharadwaj, S. Raja
Randomized Black-Box PIT for Small Depth ±-Regular Non-commutative Circuits
Ali Asadi, Léonard Brice, Krishnendu Chatterjee and K. S. Thejaswini
ε-Stationary Nash Equilibria in Multi-player Stochastic Graph Games
Ian Orzel, Srikanth Srinivasan, Sébastien Tavenas, Amir Yehudayoff
The Algebraic Cost of a Boolean Sum
1240 – 1400 Lunch
1400 – 1500 Invited Talk 2
CHAIR: Madhavan Mukund
VENUE: TBA
Parosh Aziz Abdulla
Quantum Circuit Verification — A Potential Roadmap
1500 – 1530 Break
1530 – 1700 Session A3 (Clustering, Combinatorics, & Algorithms)
CHAIR: TBA
VENUE: TBA
Session B3 (Complexity)
CHAIR: TBA
VENUE: TBA
Antonio Blanca, Zhezheng Song
Cutoff for the Swendsen–Wang dynamics on the complete graph
Anuj Dawar and Aidan Evans
Characterizing NC1 with Typed Monoids
Dale Jacobs, John Jeang, Vladimir Podolskii, Morgan Prior, Ilya Volkovich
Communication Complexity of Equality and Error-Correcting Codes
Joey Chen, Bjoern Kjos-Hanssen, Ivan Koswara, Linus Richter and Frank Stephan
Languages of Words of Low Automatic Complexity Are Hard to Compute
Yasushi Kawase, Bodhayan Roy, Mohammad Azharuddin Sanpui
Fair Allocation of Indivisible Items Across Multiple Dimensions
Donghyun Lim and Martin Ziegler
Degrees of Second and Higher-Order Polynomials
Deeparnab Chakrabarty, Jonathan Conroy, Ankita Sarkar
Clustering in Varying Metrics
Thursday, December 18, 2025
0900 1000 Invited Talk 3
CHAIR: TBA
VENUE: TBA
Bernd Finkbeiner
Hyperproperties as Design Principles: Information-Flow Guided Synthesis and Explainability in Distributed Systems
1000 – 1030 Break
1030 – 1130 Session A4 (Graph Algorithms I)
CHAIR: TBA
VENUE: TBA
Session B4 (Distributed Systems)
CHAIR: TBA
VENUE: TBA
Yashaswini Mathur, Prafullkumar Tale
A Finer View of the Parameterized Landscape of Labeled Graph Contractions
Amrita Suresh and Nobuko Yoshida
Unreliability in Practical Subclasses of Communicating Systems
Ariel Sapir, Liam Roditty
Additive, Near-Additive, and APSP in Weighted Undirected Graphs: Trade-offs and Algorithms
Nehul Jain and Bharat Adsul
Distributed games with a central decision maker
Dipan Dey, Telikepalli Kavitha
Fault-Tolerant Approximate Distance Oracles with a Source Set
1130 – 1140 Break
1140 – 1240 Session A5 (Fair Division I)
CHAIR: TBA
VENUE: TBA
Session B5 (Structured and Synchronous Systems)
CHAIR: TBA
VENUE: TBA
Mathew Francis and Veena Prabhakarn
Token Sliding Independent Set Configuration on Block Graphs
Marius Bozga, Radu Iosif and Florian Zuleger.
Iterating Non-Aggregative Structure Compositions
Umang Bhaskar, Yeshwant Pandit
Extending EFX Allocations to Further Multi-Graph Classes
Ashwin Bhaskar and M. Praveen
Regulating Synchronous Data Exchange to Meet Control Flow and Data Specifications
Ajaykrishnan E. S., Daniel Lokshtanov
Beyond Exact Fairness: Envy-Free Incomplete Connected Fair Division
1240 – 1400 Lunch
1400 – 1500 Invited Talk 4
CHAIR: TBA
VENUE: TBA
Barna Saha
TBA
1500 – 1530 Break
1530 – 1650 Session A6 (Distributed / Networks)
CHAIR: TBA
VENUE: TBA
Session B6 (Security and Resilience)
CHAIR: TBA
VENUE: TBA
Yi-Jun Chang, Yanyu Chen, Gopinath Mishra
Overlay Network Construction: Improved Overall and Node-Wise Message Complexity
Aniket Mishra and Abhishek Bichhawat
Fall-through Semantics for Mitigating Timing-based Side Channel Leaks
Thomas Erlebach, Naveen Garg, Sukriti Gupta, Amitabh Trehan
Approximating Optimal Broadcast of Files in a Hose-Model Network
Arif Ali Ap, Jasine Babu and Deepa Sara John
A Correct by Construction Fault Tolerant Voter for Input Selection of a Control System
Sina Kalantarzadeh, Nikhil Kumar Improved Upper Bounds on Multiflow–Multicut Gaps in Cactus Graphs
Improved Upper Bounds on Multiflow–Multicut Gaps in Cactus Graphs
Chaitanya Nalam, Thatchaphol Saranurak
Finding small dijoins in transitive closure time
1730 – 1830 IARCS business meeting
1900 onwards Conference Banquet
Friday, December 19, 2025
0900 1000 Invited Talk 5
CHAIR: TBA
VENUE: TBA
Pravesh K Kothari
TBA
1000 – 1030 Break
1030 – 1130 Session A7 (Fair Division II – Matching)
CHAIR: TBA
VENUE: TBA
Session B7 (Timed Systems)
CHAIR: B. Srivathsan
VENUE: TBA
Shayan Taherijam, Rohith Reddy Gangam, Vijay Vazirani
Fair Rent Division: New Budget and Rent Constraints
Gilles Geeraerts, Frédéric Herbreteau, Jean-François Raskin and Alexis Reynouard
A Zone-Based Algorithm for Timed Parity Games
Haricharan Balasundaram, J. B. Krishnashree, Girija Limaye, Madhavan Nasre
Stability Notions for Hospital Residents with Sizes
Étienne André, Swen Jacobs, Shyam Karra and Ocan Sankur
Parameterized Verification of Timed Networks with Clock Invariants
Pallavi Jain, Palash Jha, Shubham Solanki Fairness and Efficiency in Two-Sided Matching Markets
Fairness and Efficiency in Two-Sided Matching Markets
1130 – 1140 Break
1140 – 1240 Session A8 (Graph Algorithms II: Structural & Parameterized)
CHAIR: TBA
VENUE: TBA
Session B8 (Games)
CHAIR: TBA
VENUE: TBA
Archit Chauhan, Samir Datta, M. Praveen
Parallel Complexity of Depth-First-Search and Maximal path
Sophie Pinchinat and Rylo Ashmore
Cat Herding Played on Infinite Trees
Neeldhara Misra, Saraswati Nanoti
A Characterization of Spartan Graphs and New Lower Bounds for Eternal Vertex Cover
Dietmar Berwanger, Laurent Doyen and Thomas Soullard
Synthesising Full-Information Protocols
Satyabrata Jana, Soumen Mandal, Ashutosh Rai, Saket Saurabh
Node Vertex Deletion and Parameterized Complexity of its Variants
1240 – 1400 Lunch
1400 – 1500 Invited Talk 6
CHAIR: TBA
VENUE: TBA
Georg Zetzsche
Unboundedness Problems for Formal Languages
1500 – 1530 Break
1530 – 1700 Session A9 (Quantum & Hardness II)
CHAIR: TBA
VENUE: TBA
Session B9 (Logic)
CHAIR: TBA
VENUE: TBA
Prerona Chatterjee, Utsab Ghosal, Partha Mukhopadhyay, Amit Kumar Sinhababu
IPS Lower Bounds for Formulas and Sum of 1 ROABPs
Abhimanyu Choudhury and Meena Mahajan
On the Interplay of Cube Learning and Dependency Schemes in QCDCL Proof Systems
Ziad Ismaili Alaoui, Nikhil Mande
Hardness of Finding Kings and Strong Kings
Marek Chalupa, Thomas Henzinger and Ana Oliveira da Costa
Flavors of Quantifiers in Hyperlogics
Om Prakash, Vikram Sharma
On the Roots of Independence Polynomial: Quantifying The Gap
Alejandro Díaz-Caro and Octavio Malherbe
Beyond Monads and Biproducts: A Uniform Interpretation of Parallelism in Intuitionistic Logic
Rosemary Adejoh, Andreas Jakoby, Sneha Mohanty, Christian Schindelhauer
How Pinball Wizards Simulate a Turing Machine