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From the 1 of 7 linked papers with an AI index.

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7 papers

math.CO2026

Sharp bounds for the fractional chromatic number of high-girth -degenerate graphs

Peter Allen, Abhishek Dhawan, Jonathan A. Noel

The paper proves tight upper and lower bounds of order d/log d for the fractional chromatic number of high‑girth d‑degenerate graphs, provides a randomized algorithm achieving the…

math.CO2026

Off-Diagonal Ramsey Multiplicity

Elena Moss, Jonathan A. Noel

The Ramsey multiplicity problem asks for the minimum asymptotic density of monochromatic labelled copies of a graph in a red/blue colouring of the edges of . We introduce…

math.CO2026

On Tournament Anti-Sidorenko Orientations of Trees

Hao Chen, Felix Christian Clemen, Jonathan A. Noel

An oriented graph is said to be tournament anti-Sidorenko if the homomorphism density of in any tournament is bounded above by the homomorphism densit…

math.CO2025

Disconnected Common Graphs via Supersaturation

Jae-baek Lee, Jonathan A. Noel

A graph is said to be common if the number of monochromatic labelled copies of in a -colouring of the edges of a large complete graph is asymptotically minimized by a ra…

math.MG2025

Circle Squaring with Pieces of Small Boundary and Low Borel Complexity

András Máthé, Jonathan A. Noel, Oleg Pikhurko

Tarski's Circle Squaring Problem from 1925 asks whether it is possible to partition a disk in the plane into finitely many pieces and reassemble them via isometries to yield a part…

math.CO2025

Forcing Quasirandomness in a Regular Tournament

Jonathan A. Noel, Arjun Ranganathan, Lina M. Simbaqueba

A tournament is said to force quasirandomness if it has the property that a sequence of tournaments of increasing orders is quasirandom if and only if…