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Electronic Colloquium on Computational Complexity

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REPORTS > AUTHORS > NIKOLAI CHUKHIN:
All reports by Author Nikolai Chukhin:

TR26-041 | 18th March 2026
Nikolai Chukhin

A Note on Conditional Complexity Hardness of Matrix Rigidity and Tensor Rank

Recently, together with Kulikov, Mihajlin, and Smirnova (STACS 2026), we gave conditional constructions of functions with large monotone circuit complexity, matrices with high rigidity, and $3$-dimensional tensors of strongly superlinear rank.
In this note, I strengthen the rigidity construction under the same assumption and, as a direct consequence, immediately obtain ... more >>>


TR25-038 | 4th April 2025
Nikolai Chukhin, Alexander Kulikov, Ivan Mihajlin, Arina Smirnova

Conditional Complexity Hardness: Monotone Circuit Size, Matrix Rigidity, and Tensor Rank Under NSETH and Beyond

Revisions: 3

Proving complexity lower bounds remains a challenging task: currently, we only know how to prove conditional uniform (algorithm) lower bounds and nonuniform (circuit) lower bounds in restricted circuit models. About a decade ago, Williams (STOC 2010) showed how to derive nonuniform lower bounds from uniform upper bounds: roughly, by designing ... more >>>




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