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Electronic Colloquium on Computational Complexity

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TR25-120 | 1st August 2025
Shuichi Hirahara, Naoto Ohsaka

Asymptotically Optimal Inapproximability of E$k$-SAT Reconfiguration

In the Maxmin E$k$-SAT Reconfiguration problem, we are given a satisfiable $k$-CNF formula $\varphi$ where each clause contains exactly $k$ literals, along with a pair of its satisfying assignments. The objective is transform one satisfying assignment into the other by repeatedly flipping the value of a single variable, while maximizing ... more >>>


TR25-119 | 30th July 2025
John Hitchcock, Adewale Sekoni, Hadi Shafei

Counting Martingales for Measure and Dimension in Complexity Classes

This paper makes two primary contributions. First, we introduce the concept of counting martingales and use it to define counting measures, counting dimensions, and counting strong dimensions. Second, we apply these new tools to strengthen previous circuit lower bounds.

Resource-bounded measure and dimension have traditionally focused on deterministic time ... more >>>


TR25-118 | 9th August 2025
Farzan Byramji, Russell Impagliazzo

Lower bounds for the Bit Pigeonhole Principle in Bounded-Depth Resolution over Parities

Revisions: 1

We prove that for the bit pigeonhole principle with any number of pigeons and $n$ holes, any depth $D$ proof in resolution over parities must have size $\exp(\Omega(n^3/D^2))$. Our proof uses the random walk with restarts approach of Alekseev and Itsykson [STOC '25], along with ideas from recent simulation theorems ... more >>>



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