New cases of Dwork’s conjecture on asymptotic behaviors of solutions of p-adic differential equations without solvability

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2025年7月28日

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Shun Ohkubo

摘要

One of the phenomena peculiar in the theory of p-adic differential equations is that solutions f of p-adic differential equations defined on open discs may satisfy growth conditions at the boundaries. This phenomenon is first studied by Dwork, who proves the fundamental theorem asserting that if a p-adic differential equation defined on an open unit disc is solvable, then any solution f has order of logarithmic growth at most $m-1$ $m - 1$ . In this paper, we study a conjecture proposed by Dwork on a generalization of this theorem to the case without solvability. We prove new cases of Dwork’s conjecture by combining descending techniques of differential modules with the author’s previous result on Dwork’s conjecture in the rank 2 case.