activity
20172026
most citedOn ancient solutions of the heat equation

6 citations · 6 across the 7 of their papers we have counts for

collaborators

8 papers

math.DG2026

Odd mapping cone Chern character

Hao Zhuang

Our previous work established the mapping cone Chern character on the even-degree side, using the powers of the mapping cone curvature associated with the given mapping cone connec…

cond-mat.stat-mech2025

Free energy dissipation and a decomposition of general jump diffusions on without detailed balance

Shuyuan Fan, Qi Zhang

We analyze the thermodynamic structure of jump diffusions combining Brownian and Poisson noise, a class of stochastic dynamics relevant to non-equilibrium statistical physics. For…

math.DG2025

Laplace comparison on Kähler Ricci flow and convergence

Gang Tian, Qi S. Zhang, Zhenlei Zhang +2

We first prove a uniform integral Laplace comparison result for the Kähler Ricci flow on Fano manifolds which depends only on the initial metric. As an application, using Cheeger-C…

math.AP2025

Backward Harnack inequality and Hamilton estimates for heat type equations

Juanling Lu, Yuting Wu, Qi S. Zhang

Based on gradient estimates for the heat equation by Hamilton, we discover a backward in time Harnack inequality for positive solutions on compact manifolds without further restric…

math.PR2025

Entropy production rate and time-reversibility for general jump diffusions on

Qi Zhang, Yubin Lu

This paper investigates the entropy production rate and time-reversibility for general jump diffusions (Lévy processes) on . We first formulate the entropy production…

math.DG2025

Space of ancient caloric functions on some manifolds beyond volume doubling

Fanghua Lin, Hongbing Qiu, Jun Sun +1

Under a condition that breaks the volume doubling barrier, we obtain a time polynomial structure result on the space of ancient caloric functions with polynomial growth on manifold…

math.DG2024

A rigidity result for ancient Ricci flows

Qi S. Zhang

Using a size condition of the sharp log Sobolev functional (log entropy) near infinity only, we prove a rigidity result for ancient Ricci flows without sign condition on the curvat…

math.AP2017★ 6 cited

On ancient solutions of the heat equation

Fanghua Lin, Qi S. Zhang

An explicit representation formula for all positive ancient solutions of the heat equation in the Euclidean case is found. In the Riemannian case with nonnegative Ricci curvature,…