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Electronic Colloquium on Computational Complexity

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REPORTS > KEYWORD > QUASI-RANDOM GROUPS:
Reports tagged with quasi-random groups:
TR21-142 | 1st October 2021
Amey Bhangale, Prahladh Harsha, Sourya Roy

Mixing of 3-term progressions in Quasirandom Groups

In this note, we show the mixing of three-term progressions $(x, xg, xg^2)$ in every finite quasirandom group, fully answering a question of Gowers. More precisely, we show that for any $D$-quasirandom group $G$ and any three sets $A_1, A_2, A_3 \subset G$, we have
\[ \left|\Pr_{x,y\sim G}\left[ x \in ... more >>>


TR24-170 | 5th November 2024
Michael Jaber, Shachar Lovett, Anthony Ostuni

Corners in Quasirandom Groups via Sparse Mixing

Revisions: 1

We improve the best known upper bounds on the density of corner-free sets over quasirandom groups from inverse poly-logarithmic to quasi-polynomial. We make similarly substantial improvements to the best known lower bounds on the communication complexity of a large class of permutation functions in the 3-player Number-on-Forehead model. Underpinning both ... more >>>




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