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math.DS2026

Height arguments toward the dynamical Mordell-Lang problem in arbitrary characteristic

Junyi Xie, She Yang

We use height arguments to prove two results about the dynamical Mordell-Lang problem. (i) For an endomorphism of a projective variety, the return set of a dense orbit into a curve…

math.DS2026

Dynamical Mordell-Lang problem for automorphisms of surfaces in positive characteristic

Junyi Xie, She Yang

We solve the dynamical Mordell-Lang problem in positive characteristic for automorphisms of projective surfaces.

math.DS2026

Dynamical Mordell-Lang conjecture for split self-maps of affine curve times projective curve

Junyi Xie, She Yang, Aoyang Zheng

We prove the dynamical Mordell-Lang conjecture for product of endomorphisms of an affine curve and a projective curve over .

math.DS2025

Arithmetic Degrees are Cohomological Lyapunov Multipliers

Jiarui Song, Junyi Xie, She Yang

For endomorphisms of projective varieties, we prove that the arithmetic degree of a point with Zariski dense orbit must be a cohomological Lyapunov multiplier of the dynamical syst…

math.DS2025

Algebraic dynamics and recursive inequalities

Junyi Xie

We get three basic results in algebraic dynamics: (1). We give the first algorithm to compute the dynamical degrees to arbitrary precision. (2). We prove that for a family of domin…

math.DS2024

On the dynamical Mordell-Lang conjecture in positive characteristic

Junyi Xie, She Yang

We solve the dynamical Mordell-Lang conjecture for bounded-degree dynamical systems in positive characteristic. The answer in this case disproves the original version of the pDML c…