Twelve common flex lines in a general pencil of cubics
arXiv:2607.26396
Abstract
We prove that a general pencil of plane cubics over has exactly common flex lines. This answers a question of Ciliberto, Miranda, and Roé. The main result of this paper was obtained using generative AI, particularly ChatGPT 5.5 Pro and the Danus system.
9 pages. Mostly AI-generated, human-verified