In this paper, we show how to generalize the lazy update regime from dynamic matrix product [Cohen, Lee, Song STOC 2019, JACM 2021] to dynamic kronecker product. We provide an algorithm that uses nω(⌈k/2⌉,⌊k/2⌋,a)−a amortized update time and nω(⌈(k−s)/2⌉,⌊(k−s)/2⌋,a) worst case query time for dynamic kronecker product problem. Unless tensor MV conjecture is false, there is no algorithm that can use both nω(⌈k/2⌉,⌊k/2⌋,a)−a−Ω(1) amortized update time, and nω(⌈(k−s)/2⌉,⌊(k−s)/2⌋,a)−Ω(1) worst case query time.
Cite
@article{arxiv.2603.19443,
title = {Lazy Kronecker Product},
author = {Zhao Song},
journal= {arXiv preprint arXiv:2603.19443},
year = {2026}
}