Jian Wang

activity

20172021

collaborators

3 papers

math.CO2021

Extremal Problem for Matchings and Rainbow Matchings on Direct Products

Jian Wang, Jie You

Let $n_{1}, \dots, n_{ℓ}, k_{1}, \dots, k_{ℓ}$ be integers and let $V_{1}, \dots, V_{ℓ}$ be disjoint sets with $∣ V_{i} ∣ = n_{i}$ for $i = 1, \dots, ℓ$ . Define $⊔_{i = 1}^{ℓ} (k _{i} V _{i})$ a…

math.DS2018

A question of Norton-Sullivan in the analytic case

Jian Wang, Hui Yang

In 1996, A. Norton and D. Sullivan asked the following question: If $f : T^{2} \to T^{2}$ is a diffeomorphism, $h : T^{2} \to T^{2}$ is a contin…

math.DS2017

On bifurcation of eigenvalues along convex symplectic paths

Yinshan Chang, Yiming Long, Jian Wang

We consider a continuously differentiable curve $t \mapsto γ (t)$ in the space of $2 n \times 2 n$ real symplectic matrices, which is the solution of the following ODE: $\frac{\mathrm{d…