I am an assistant professor at Nanjing University. I obtained my PhD degree from Université Paris-Sud and Nankai University in September 2014, under the supervision of Ahmed Abbes and Lei Fu. From 2015 to 2017, I was a JSPS Postdoctoral fellow at Graduate School of Mathematical Sciences, the University of Tokyo, working with Takeshi Saito. Form August 2017 to July 2018, I was a Post-doc at Max-Planck Institute for Mathematics in Bonn.

Here is my CV.


Email Address: huhaoyu (at) nju.edu.cn & huhaoyu1987 (at) gmail.com

Research Area

Arithmetic Algebraic Geometry, especially ramification theory of l-adic sheaves and related topics.

Publications and Preprints

  1. Ramification and nearby cycles for l-adic sheaves on relative curves. Tohoku Math. J. (2) 67 (2015), no. 2, 153–194. (Journal, Arxiv)
  2. Refined characteristic class and conductor formula. Math. Z. 281 (2015), no. 1-2, 571–609. (Journal, Arxiv)
  3. (With Enlin Yang) Semi-continuity for total dimension divisors of étale sheaves. Internat. J. Math. 28 (2017), no. 1, 1750001. (Journal, Arxiv)
  4. (With Enlin Yang) Relative singular support and the semi-continuity of characteristic cycles for étale sheaves. Selecta Math. New Ser. Vol. 24, Issue 3, (2018), 2235–2273. (Journal, Arxiv)
  5. Logarithmic ramifications of étale sheaves by restricting to curves. IMRN, rnx228 (2017), (Journal, Arxiv)
  6. Purely inseparable extensions and ramification filtrations. Acta Mathematica Sinica, English Series, Online first, (2019). (Journal, Arxiv)
  7. (With J.-B. Teyssier) Characteristic cycle and wild ramification of nearby cycles of l-adic sheaves, Pre-print (2019). (Arxiv)

Other Writings

Ramification et cycles proches pour les faisceaux l-adiques sur un schéma au-dessus d'un trait. Thèse de doctorat. Université Paris-Sud, Sep. 2014.

It consists first two articles of the publications.

Semi-continuity of total dimension divisors for l-adic sheaves (research announcement). To appear at RIMS Kokyuroku Besstasu, Algebraic Number Theory and Related Topics 2015.

It is a research announcement of the third article of the publications. Please click on here.