On the Log Hodge Theory of Toroidal Varieties and a Partial Proof of the Absolute Hodge Conjecture

Abstract

In this paper, we establish an innovative framework in logarithmic Hodge theory for toroidal varieties, introducing weighted toroidal structures and developing a systematic obstruction theory for Hodge classes. Building upon recent advances in toroidal geometry, particularly the $E_1$-degeneration results of Wei (\cite{Wei24}), we construct a categorical Hodge correspondence and prove the Absolute Hodge conjecture for projective toroidal varieties equipped with rational-weighted structures satisfying specific compatibility conditions. Our approach provides new tools for understanding the fine structure of Hodge classes and their extension properties across boundaries, with potential applications in moduli space compactifications, non-abelian Hodge theory, and tropical geometry.