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48th ICALP 2021: Glasgow, Scotland (Virtual Conference)
- Nikhil Bansal, Emanuela Merelli

, James Worrell
:
48th International Colloquium on Automata, Languages, and Programming, ICALP 2021, July 12-16, 2021, Glasgow, Scotland (Virtual Conference). LIPIcs 198, Schloss Dagstuhl - Leibniz-Zentrum für Informatik 2021, ISBN 978-3-95977-195-5 - Front Matter, Table of Contents, Preface, Conference Organization. 0:1-0:38

- Christel Baier

, Clemens Dubslaff, Florian Funke, Simon Jantsch, Rupak Majumdar, Jakob Piribauer
, Robin Ziemek
:
From Verification to Causality-Based Explications (Invited Talk). 1:1-1:20 - Andrei A. Bulatov:

Symmetries and Complexity (Invited Talk). 2:1-2:17 - Keren Censor-Hillel:

Distributed Subgraph Finding: Progress and Challenges (Invited Talk). 3:1-3:14 - Orr Dunkelman, Zeev Geyzel, Chaya Keller

, Nathan Keller, Eyal Ronen, Adi Shamir, Ran J. Tessler:
Error Resilient Space Partitioning (Invited Talk). 4:1-4:22 - Toniann Pitassi:

Algebraic Proof Systems (Invited Talk). 5:1-5:1 - David P. Woodruff:

A Very Sketchy Talk (Invited Talk). 6:1-6:8 - Amir Abboud, Virginia Vassilevska Williams:

Fine-Grained Hardness for Edit Distance to a Fixed Sequence. 7:1-7:14 - Dimitris Achlioptas, Kostas Zampetakis:

Local Approximations of the Independent Set Polynomial. 8:1-8:16 - Deeksha Adil, Brian Bullins, Rasmus Kyng, Sushant Sachdeva:

Almost-Linear-Time Weighted 𝓁p-Norm Solvers in Slightly Dense Graphs via Sparsification. 9:1-9:15 - Pankaj K. Agarwal, Alex Steiger:

An Output-Sensitive Algorithm for Computing the Union of Cubes and Fat Boxes in 3D. 10:1-10:20 - Pankaj K. Agarwal, Xiao Hu, Stavros Sintos, Jun Yang:

Dynamic Enumeration of Similarity Joins. 11:1-11:19 - Shyan Akmal

, Ce Jin
:
Faster Algorithms for Bounded Tree Edit Distance. 12:1-12:15 - Shyan Akmal

, Virginia Vassilevska Williams:
Improved Approximation for Longest Common Subsequence over Small Alphabets. 13:1-13:18 - Noga Alon, Andrei Graur:

Efficient Splitting of Necklaces. 14:1-14:17 - Markus Anders

, Pascal Schweitzer
, Florian Wetzels
:
Comparative Design-Choice Analysis of Color Refinement Algorithms Beyond the Worst Case. 15:1-15:15 - Markus Anders

, Pascal Schweitzer
:
Search Problems in Trees with Symmetries: Near Optimal Traversal Strategies for Individualization-Refinement Algorithms. 16:1-16:21 - Antonios Antoniadis, Matthias Englert, Nicolaos Matsakis, Pavel Veselý

:
Breaking the Barrier Of 2 for the Competitiveness of Longest Queue Drop. 17:1-17:20 - Vahid R. Asadi

, Igor Shinkar:
Relaxed Locally Correctable Codes with Improved Parameters. 18:1-18:12 - Sepehr Assadi, Soheil Behnezhad:

Beating Two-Thirds For Random-Order Streaming Matching. 19:1-19:13 - Mitali Bafna, Nikhil Vyas:

Optimal Fine-Grained Hardness of Approximation of Linear Equations. 20:1-20:19 - Tanvi Bajpai, Deeparnab Chakrabarty, Chandra Chekuri, Maryam Negahbani:

Revisiting Priority k-Center: Fairness and Outliers. 21:1-21:20 - Étienne Bamas, Paritosh Garg, Lars Rohwedder

:
The Submodular Santa Claus Problem in the Restricted Assignment Case. 22:1-22:18 - Sayan Bandyapadhyay, Fedor V. Fomin

, Kirill Simonov:
On Coresets for Fair Clustering in Metric and Euclidean Spaces and Their Applications. 23:1-23:15 - Eleni Batziou

, Kristoffer Arnsfelt Hansen
, Kasper Høgh
:
Strong Approximate Consensus Halving and the Borsuk-Ulam Theorem. 24:1-24:20 - Ran Ben Basat, Michael Mitzenmacher, Shay Vargaftik:

How to Send a Real Number Using a Single Bit (And Some Shared Randomness). 25:1-25:20 - Matthias Bentert, André Nichterlein, Malte Renken

, Philipp Zschoche:
Using a Geometric Lens to Find k Disjoint Shortest Paths. 26:1-26:14 - Sayan Bhattacharya, Peter Kiss:

Deterministic Rounding of Dynamic Fractional Matchings. 27:1-27:14 - Marcin Bienkowski

, Artur Kraska, Hsiang-Hsuan Liu
:
Traveling Repairperson, Unrelated Machines, and Other Stories About Average Completion Times. 28:1-28:20 - Andreas Björklund, Petteri Kaski:

Counting Short Vector Pairs by Inner Product and Relations to the Permanent. 29:1-29:21 - Guy Blanc, Jane Lange, Li-Yang Tan:

Learning Stochastic Decision Trees. 30:1-30:16 - Joakim Blikstad:

Breaking O(nr) for Matroid Intersection. 31:1-31:17 - Jan Böker

:
Graph Similarity and Homomorphism Densities. 32:1-32:17 - Andrej Bogdanov, Gautam Prakriya:

Direct Sum and Partitionability Testing over General Groups. 33:1-33:19 - Édouard Bonnet:

4 vs 7 Sparse Undirected Unweighted Diameter is SETH-Hard at Time n^{4/3}. 34:1-34:15 - Édouard Bonnet, Colin Geniet, Eun Jung Kim, Stéphan Thomassé, Rémi Watrigant:

Twin-width III: Max Independent Set, Min Dominating Set, and Coloring. 35:1-35:20 - Sébastien Bouchard, Yoann Dieudonné, Arnaud Labourel, Andrzej Pelc:

Almost-Optimal Deterministic Treasure Hunt in Arbitrary Graphs. 36:1-36:20 - Joshua Brakensiek, Venkatesan Guruswami, Sai Sandeep:

Conditional Dichotomy of Boolean Ordered Promise CSPs. 37:1-37:15 - Cornelius Brand

, Kevin Pratt:
Parameterized Applications of Symbolic Differentiation of (Totally) Multilinear Polynomials. 38:1-38:19 - Karl Bringmann, Debarati Das:

A Linear-Time n0.4-Approximation for Longest Common Subsequence. 39:1-39:20 - Karl Bringmann, Jasper Slusallek:

Current Algorithms for Detecting Subgraphs of Bounded Treewidth Are Probably Optimal. 40:1-40:16 - Karl Bringmann, Vasileios Nakos:

Fast n-Fold Boolean Convolution via Additive Combinatorics. 41:1-41:17 - Moritz Buchem, Lars Rohwedder

, Tjark Vredeveld, Andreas Wiese
:
Additive Approximation Schemes for Load Balancing Problems. 42:1-42:17 - Massimo Cairo, Romeo Rizzi, Alexandru I. Tomescu

, Elia C. Zirondelli:
Genome Assembly, from Practice to Theory: Safe, Complete and Linear-Time. 43:1-43:18 - Marco Carmosino

, Kenneth Hoover, Russell Impagliazzo
, Valentine Kabanets, Antonina Kolokolova:
Lifting for Constant-Depth Circuits and Applications to MCSP. 44:1-44:20 - Ruoxu Cen

, Yu Cheng
, Debmalya Panigrahi, Kevin Sun:
Sparsification of Directed Graphs via Cut Balance. 45:1-45:21 - Keren Censor-Hillel, Noa Marelly, Roy Schwartz, Tigran Tonoyan:

Fault Tolerant Max-Cut. 46:1-46:20 - Timothy M. Chan, Virginia Vassilevska Williams, Yinzhan Xu:

Algorithms, Reductions and Equivalences for Small Weight Variants of All-Pairs Shortest Paths. 47:1-47:21 - Panagiotis Charalampopoulos

, Pawel Gawrychowski
, Shay Mozes
, Oren Weimann:
An Almost Optimal Edit Distance Oracle. 48:1-48:20 - Chandra Chekuri, Kent Quanrud:

Faster Algorithms for Rooted Connectivity in Directed Graphs. 49:1-49:16 - Chandra Chekuri, Kent Quanrud:

Isolating Cuts, (Bi-)Submodularity, and Faster Algorithms for Connectivity. 50:1-50:20 - Lijie Chen, Zhenjian Lu, Xin Lyu, Igor C. Oliveira:

Majority vs. Approximate Linear Sum and Average-Case Complexity Below NC¹. 51:1-51:20 - Lijie Chen, Gillat Kol, Dmitry Paramonov, Raghuvansh R. Saxena, Zhao Song, Huacheng Yu:

Near-Optimal Two-Pass Streaming Algorithm for Sampling Random Walks over Directed Graphs. 52:1-52:19 - Yu Chen, Sanjeev Khanna, Ansh Nagda:

Sublinear Time Hypergraph Sparsification via Cut and Edge Sampling Queries. 53:1-53:21 - Kuan Cheng, Alireza Farhadi, MohammadTaghi Hajiaghayi, Zhengzhong Jin, Xin Li, Aviad Rubinstein, Saeed Seddighin, Yu Zheng:

Streaming and Small Space Approximation Algorithms for Edit Distance and Longest Common Subsequence. 54:1-54:20 - Andrew M. Childs

, Shih-Han Hung, Tongyang Li
:
Quantum Query Complexity with Matrix-Vector Products. 55:1-55:19 - George Christodoulou

, Elias Koutsoupias, Annamária Kovács:
Truthful Allocation in Graphs and Hypergraphs. 56:1-56:20 - Christian Coester

, Elias Koutsoupias:
Towards the k-Server Conjecture: A Unifying Potential, Pushing the Frontier to the Circle. 57:1-57:20 - Artur Czumaj, George Kontogeorgiou, Mike Paterson:

Haystack Hunting Hints and Locker Room Communication. 58:1-58:20 - Gianlorenzo D'Angelo

, Debashmita Poddar
, Cosimo Vinci
:
Improved Approximation Factor for Adaptive Influence Maximization via Simple Greedy Strategies. 59:1-59:19 - Mina Dalirrooyfard, Jenny Kaufmann:

Approximation Algorithms for Min-Distance Problems in DAGs. 60:1-60:17 - Christoph Damerius, Dominik Kaaser, Peter Kling

, Florian Schneider:
On Greedily Packing Anchored Rectangles. 61:1-61:20 - Ewan Davies

, Will Perkins
:
Approximately Counting Independent Sets of a Given Size in Bounded-Degree Graphs. 62:1-62:18 - Jonas Ellert, Johannes Fischer:

Linear Time Runs Over General Ordered Alphabets. 63:1-63:16 - Jacob Evald, Viktor Fredslund-Hansen, Maximilian Probst Gutenberg

, Christian Wulff-Nilsen:
Decremental APSP in Unweighted Digraphs Versus an Adaptive Adversary. 64:1-64:20 - Dimitris Fotakis, Panagiotis Kostopanagiotis, Vasileios Nakos, Georgios Piliouras, Stratis Skoulakis

:
On the Approximability of Multistage Min-Sum Set Cover. 65:1-65:19 - Tobias Friedrich, Andreas Göbel, Martin S. Krejca

, Marcus Pappik:
A Spectral Independence View on Hard Spheres via Block Dynamics. 66:1-66:15 - Zachary Friggstad, Chaitanya Swamy:

Constant-Factor Approximation to Deadline TSP and Related Problems in (Almost) Quasi-Polytime. 67:1-67:21 - Hu Fu, Zhihao Gavin Tang, Hongxun Wu

, Jinzhao Wu, Qianfan Zhang:
Random Order Vertex Arrival Contention Resolution Schemes for Matching, with Applications. 68:1-68:20 - Bernd Gärtner

, Sebastian Haslebacher
, Hung P. Hoang
:
A Subexponential Algorithm for ARRIVAL. 69:1-69:14 - Arun Ganesh, Bruce M. Maggs, Debmalya Panigrahi:

Universal Algorithms for Clustering Problems. 70:1-70:20 - Arnab Ganguly, Dhrumil Patel

, Rahul Shah, Sharma V. Thankachan:
LF Successor: Compact Space Indexing for Order-Isomorphic Pattern Matching. 71:1-71:19 - Robert Ganian, Thekla Hamm

, Fabian Klute, Irene Parada
, Birgit Vogtenhuber:
Crossing-Optimal Extension of Simple Drawings. 72:1-72:17 - Uma Girish, Ran Raz

, Wei Zhan:
Quantum Logspace Algorithm for Powering Matrices with Bounded Norm. 73:1-73:20 - Nick Gravin, Zhihao Gavin Tang, Kangning Wang

:
Online Stochastic Matching with Edge Arrivals. 74:1-74:20 - Yuzhou Gu, Adam Polak

, Virginia Vassilevska Williams, Yinzhan Xu:
Faster Monotone Min-Plus Product, Range Mode, and Single Source Replacement Paths. 75:1-75:20 - Yong Gu

, Hanlin Ren
:
Constructing a Distance Sensitivity Oracle in O(n^2.5794 M) Time. 76:1-76:20 - Anupam Gupta

, Benjamin Moseley, Rudy Zhou:
Structural Iterative Rounding for Generalized k-Median Problems. 77:1-77:18 - Bernhard Haeupler, D. Ellis Hershkowitz, David Wajc

:
Near-Optimal Schedules for Simultaneous Multicasts. 78:1-78:19 - Maria Hartmann, László Kozma

, Corwin Sinnamon, Robert E. Tarjan:
Analysis of Smooth Heaps and Slim Heaps. 79:1-79:20 - Chien-Chung Huang, Mathieu Mari, Claire Mathieu, Jens Vygen:

Approximating Maximum Integral Multiflows on Bounded Genus Graphs. 80:1-80:18 - Sharat Ibrahimpur

, Chaitanya Swamy:
Minimum-Norm Load Balancing Is (Almost) as Easy as Minimizing Makespan. 81:1-81:20 - Hyejung H. Jee, Carlo Sparaciari

, Omar Fawzi
, Mario Berta:
Quasi-Polynomial Time Algorithms for Free Quantum Games in Bounded Dimension. 82:1-82:20 - Adam Karczmarz

:
Fully Dynamic Algorithms for Minimum Weight Cycle and Related Problems. 83:1-83:20 - Tali Kaufman, Izhar Oppenheim

:
Coboundary and Cosystolic Expansion from Strong Symmetry. 84:1-84:16 - Telikepalli Kavitha:

Maximum Matchings and Popularity. 85:1-85:21 - Ken-ichi Kawarabayashi, Bojan Mohar, Roman Nedela, Peter Zeman:

Automorphisms and Isomorphisms of Maps in Linear Time. 86:1-86:15 - Tuukka Korhonen

:
Lower Bounds on Dynamic Programming for Maximum Weight Independent Set. 87:1-87:14 - Michal Koucký

, Karel Král:
Sorting Short Integers. 88:1-88:17 - Jakub Kozik:

Improving Gebauer's Construction of 3-Chromatic Hypergraphs with Few Edges. 89:1-89:9 - Adam Kurpisz

, Aaron Potechin
, Elias Samuel Wirth:
SoS Certification for Symmetric Quadratic Functions and Its Connection to Constrained Boolean Hypercube Optimization. 90:1-90:20 - J. A. Gregor Lagodzinski

, Andreas Göbel, Katrin Casel, Tobias Friedrich:
On Counting (Quantum-)Graph Homomorphisms in Finite Fields of Prime Order. 91:1-91:15 - Michael Lampis:

Minimum Stable Cut and Treewidth. 92:1-92:16 - Reut Levi:

Testing Triangle Freeness in the General Model in Graphs with Arboricity O(√n). 93:1-93:13 - Zhenjian Lu, Igor C. Oliveira:

An Efficient Coding Theorem via Probabilistic Representations and Its Applications. 94:1-94:20 - Dániel Marx

, Govind S. Sankar
, Philipp Schepper
:
Degrees and Gaps: Tight Complexity Results of General Factor Problems Parameterized by Treewidth and Cutwidth. 95:1-95:20 - Theo McKenzie, Sidhanth Mohanty:

High-Girth Near-Ramanujan Graphs with Lossy Vertex Expansion. 96:1-96:15 - Benjamin Moseley, Kirk Pruhs, Alireza Samadian, Yuyan Wang:

Relational Algorithms for k-Means Clustering. 97:1-97:21 - Yonatan Nakar, Dana Ron:

Testing Dynamic Environments: Back to Basics. 98:1-98:20 - Eike Neumann

, Joël Ouaknine, James Worrell:
Decision Problems for Second-Order Holonomic Recurrences. 99:1-99:20 - Ilan Newman, Nithin Varma

:
New Sublinear Algorithms and Lower Bounds for LIS Estimation. 100:1-100:20 - Takaaki Nishimoto, Yasuo Tabei:

Optimal-Time Queries on BWT-Runs Compressed Indexes. 101:1-101:15 - Ojas Parekh, Kevin Thompson:

Application of the Level-2 Quantum Lasserre Hierarchy in Quantum Approximation Algorithms. 102:1-102:20 - Enoch Peserico, Michele Scquizzato:

Matching on the Line Admits No o(√log n)-Competitive Algorithm. 103:1-103:3 - Seth Pettie, Dingyu Wang, Longhui Yin

:
Non-Mergeable Sketching for Cardinality Estimation. 104:1-104:20 - Seth Pettie, Longhui Yin

:
The Structure of Minimum Vertex Cuts. 105:1-105:20 - Adam Polak

, Lars Rohwedder, Karol Wegrzycki
:
Knapsack and Subset Sum with Small Items. 106:1-106:19 - Nicolás Rivera

, Thomas Sauerwald, John Sylvester
:
Multiple Random Walks on Graphs: Mixing Few to Cover Many. 107:1-107:16 - Marc Roth

, Johannes Schmitt, Philip Wellnitz
:
Detecting and Counting Small Subgraphs, and Evaluating a Parameterized Tutte Polynomial: Lower Bounds via Toroidal Grids and Cayley Graph Expanders. 108:1-108:16 - Amin Saberi, David Wajc

:
The Greedy Algorithm Is not Optimal for On-Line Edge Coloring. 109:1-109:18 - Joran van Apeldoorn, Sander Gribling, Yinan Li, Harold Nieuwboer

, Michael Walter
, Ronald de Wolf:
Quantum Algorithms for Matrix Scaling and Matrix Balancing. 110:1-110:17 - Emanuele Viola:

Fourier Conjectures, Correlation Bounds, and Majority. 111:1-111:15 - David P. Woodruff, Samson Zhou:

Separations for Estimating Large Frequency Moments on Data Streams. 112:1-112:21 - Or Zamir:

Breaking the 2ⁿ Barrier for 5-Coloring and 6-Coloring. 113:1-113:20 - Tianyi Zhang:

Deterministic Maximum Flows in Simple Graphs. 114:1-114:16 - Samson Abramsky

, Luca Reggio
:
Arboreal Categories and Resources. 115:1-115:20 - Antoine Amarilli, Louis Jachiet, Charles Paperman

:
Dynamic Membership for Regular Languages. 116:1-116:17 - Paolo Baldan, Francesco Ranzato, Linpeng Zhang:

A Rice's Theorem for Abstract Semantics. 117:1-117:19 - Borja Balle, Clara Lacroce, Prakash Panangaden, Doina Precup, Guillaume Rabusseau:

Optimal Spectral-Norm Approximate Minimization of Weighted Finite Automata. 118:1-118:20 - Gabriel Bathie, Tatiana Starikovskaya:

Property Testing of Regular Languages with Applications to Streaming Property Testing of Visibly Pushdown Languages. 119:1-119:17 - Manuel Bodirsky

, Simon Knäuer, Sebastian Rudolph
:
Datalog-Expressibility for Monadic and Guarded Second-Order Logic. 120:1-120:17 - Alex Brandts, Stanislav Zivný:

Beyond PCSP(1-in-3, NAE). 121:1-121:14 - Antonin Callard

, Pascal Vanier:
Computational Characterization of Surface Entropies for ℤ² Subshifts of Finite Type. 122:1-122:20 - Antonio Casares, Thomas Colcombet

, Nathanaël Fijalkow
:
Optimal Transformations of Games and Automata Using Muller Conditions. 123:1-123:14 - Krishnendu Chatterjee, Monika Henzinger

, Sagar Kale
, Alexander Svozil:
Faster Algorithms for Bounded Liveness in Graphs and Game Graphs. 124:1-124:21 - Luca Ciccone, Luca Padovani:

Inference Systems with Corules for Fair Subtyping and Liveness Properties of Binary Session Types. 125:1-125:16 - Lorenzo Clemente, Michal Skrzypczak:

Deterministic and Game Separability for Regular Languages of Infinite Trees. 126:1-126:15 - Thomas Colcombet

, Arthur Jaquard
:
A Complexity Approach to Tree Algebras: the Bounded Case. 127:1-127:13 - Wojciech Czerwinski

, Slawomir Lasota, Lukasz Orlikowski:
Improved Lower Bounds for Reachability in Vector Addition Systems. 128:1-128:15 - Wojciech Czerwinski

, Antoine Mottet
, Karin Quaas:
New Techniques for Universality in Unambiguous Register Automata. 129:1-129:16 - Dominik D. Freydenberger, Liat Peterfreund:

The Theory of Concatenation over Finite Models. 130:1-130:17 - Sergey Goncharov

:
Uniform Elgot Iteration in Foundations. 131:1-131:16 - Alexandre Goy, Daniela Petrisan, Marc Aiguier:

Powerset-Like Monads Weakly Distribute over Themselves in Toposes and Compact Hausdorff Spaces. 132:1-132:14 - Erich Grädel, Lovro Mrkonjic:

Elementary Equivalence Versus Isomorphism in Semiring Semantics. 133:1-133:20 - Martin Grohe, Sandra Kiefer

:
Logarithmic Weisfeiler-Leman Identifies All Planar Graphs. 134:1-134:20 - Gabriel Istrate, Cosmin Bonchis, Adrian Craciun:

Kernelization, Proof Complexity and Social Choice. 135:1-135:21 - Yangjia Li, Dominique Unruh:

Quantum Relational Hoare Logic with Expectations. 136:1-136:20 - Benjamin Monmege, Julie Parreaux, Pierre-Alain Reynier:

Playing Stochastically in Weighted Timed Games to Emulate Memory. 137:1-137:17 - Antoine Mottet

, Tomás Nagy
, Michael Pinsker
, Michal Wrona:
Smooth Approximations and Relational Width Collapses. 138:1-138:20 - Lê Thành Dung Nguyên

, Camille Noûs, Cécilia Pradic:
Comparison-Free Polyregular Functions. 139:1-139:20 - Pawel Parys

:
Higher-Order Model Checking Step by Step. 140:1-140:16 - Ian Pratt-Hartmann

:
Fluted Logic with Counting. 141:1-141:17 - Todd Schmid

, Tobias Kappé, Dexter Kozen, Alexandra Silva:
Guarded Kleene Algebra with Tests: Coequations, Coinduction, and Completeness. 142:1-142:14 - Han Xu, Zhenjiang Hu:

Analytical Differential Calculus with Integration. 143:1-143:20

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