Work

An Improved Lower Bound for the Complex Grothendieck Constant

Year: 2026
Type: preprint
Abstract: We prove $K_G^{\mathbb{C}}>1.35584631827168$ for the classical complex Grothendieck constant, closing more than one quarter of the gap between Davie's lower bound and Haagerup's upper bound. The numerical part of the proof is rigorously verified by interval arithmetic. The lower bound and the proof were discovered by the Odin Automatic AI Research Agent.
Institution: Harvard University
Language: English
Open Access status: green
OpenAlex ID: W7211994549
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