Dr. Nick Fischer

About me:

I am a researcher broadly interested in theoretical computer science. My specific research interests include fine-grained complexity and algorithm design, computational problems related to additive combinatorics, string algorithms, and algebraic methods.

I am currently a postdoc at INSAIT hosted by Amir Abboud. Before, I was a postdoc at Weizmann Institute of Science hosted also by Amir Abboud. Before that, I have completed my PhD at Saarland University and Max Planck Institute for Informatics, advised by Karl Bringmann.

2025

Nick Fischer, Ce Jin, Yinzhan Xu.
New Applications of 3SUM-Counting in Fine-Grained Complexity and Pattern Matching
In: ACM-SIAM Symposium on Discrete Algorithms (SODA 2025)

Nick Fischer
Sumsets, 3SUM, Subset Sum: Now for Real!
In: ACM-SIAM Symposium on Discrete Algorithms (SODA 2025)

Amir Abboud, Nick Fischer, Ron Safier, Nathan Wallheimer
Recognizing Sumsets is NP-Complete
In: ACM-SIAM Symposium on Discrete Algorithms (SODA 2025)

Karl Bringmann, Nick Fischer, Vasileios Nakos
Beating Bellman’s Algorithm for Subset Sum
In: ACM-SIAM Symposium on Discrete Algorithms (SODA 2025)

Nick Fischer, Bernhard Haeupler, Rustam Latypov, Antti Roeyskoe, Aurelio Sulser
A Simple Parallel Algorithm with Near-Linear Work for Negative-Weight
In: SIAM Symposium on Simplicity in Algorithms (SOSA 2025)

Karl Bringmann, Nick Fischer, Bernhard Haeupler, Rustam Latypov
Near-Optimal Directed Low-Diameter Decompositions
In: EATCS International Colloquium on Automata, Languages and Programming (ICALP 2025)

Nick Fischer, Elazar Goldenberg, Mursalin Habib, Karthik C. S.
Hardness of Median and Center in the Ulam Metric
In: The European Symposium on Algorithms (ESA 2025)

Nick Fischer, Vasileios Nakos
ℓ2/ℓ2 Sparse Recovery via Weighted Hypergraph Peeling
In: The 57th ACM Symposium on Theory of Computing (STOC 2025)

Karl Bringmann, Nick Fischer, Bernhard Haeupler, Rustam Latypov
Near-Optimal Directed Low-Diameter Decompositions
In: International Colloquium on Automata, Languages and Programming (ICALP 2025)

Nick Fischer, Evangelos Kipouridis, Jonas Klausen, Mikkel Thorup
A Faster Algorithm for Constrained Correlation Clustering
In: Symposium on Theoretical Aspects of Computer Science (STACS 2025)

Amir Abboud, Nick Fischer, Ce Jin, Virginia Vassilevska Williams, Zoe Xi
All-Pairs Shortest Paths with Few Weights per Node
In: The 57th ACM Symposium on Theory of Computing (STOC 2025)

Nick Fischer, Marvin Künnemann, Mirza Redzic, Julian Stieß
The Role of Regularity in (Hyper-)Clique Detection and Implications for Optimizing Boolean CSPs
In: International Colloquium on Automata, Languages and Programming (ICALP 2025)

Nick Fischer, Melvin Kallmayer, Leo Wennmann
A Simple Algorithm for Trimmed Multipoint Evaluation
In: European Symposium on Algorithms (ESA 2025)