The multiplicative Merino–Welsh conjecture for matroids

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Let MM be a matroid with no loops or isthmuses, and let T(M;x,y)T(M;x,y) denote its Tutte polynomial. Multiplicative Merino–Welsh conjecture.

T(M;0,2)T(M;2,0)≥T(M;1,1)2.T(M;0,2)T(M;2,0)\geq T(M;1,1)^2.

This is presented as a seemingly stronger consequence of the additive Merino–Welsh conjecture, using direct sums and duality. Its status is not resolved in the supplied source.

References

Primary source

Joseph P. S. Kung, “Inconsequential results on the Merino-Welsh conjecture for Tutte polynomials”, arXiv:2105.01825 (2021).

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