Chuan-Fu Yang

collaborators

3 papers

math.SP2025

Weak separability and partial Fermi isospectrality of discrete periodic SchrÃ¶dinger operators

Jifeng Chu, Kang Lyu, Chuan-Fu Yang

In this paper, we consider the discrete periodic SchrÃ¶dinger operators $I^ + V$ on $Z^{d}$ , where $V$ is $I^$ -periodic with $Î=q_1 \mathbb{Z}\oplus q_2\mathbb{Z}\oplus\cdots\oplus q…

math.SP2025

On the inverse transmission eigenvalue problem with a piecewise $W_{2}^{1}$ refractive index

Tao Liu, Kang Lyu, Guangsheng Wei +1

In this paper, we consider the inverse spectral problem of determining the spherically symmetric refractive index in a bounded spherical region of radius $b$ . Instead of the usual…

math-ph2025

On the perturbed periodic SchrÃ¶dinger operators with separate resonant embedded eigenvalues

Kang Lyu, Chuanfu Yang

In this paper, we consider SchrÃ¶dinger operators on $L^{2} (0, \infty)$ given by \begin{align} Hu=(H_0+V)u=-u^{\prime\prime}+V_0u+Vu,\nonumber \end{align} where $V_{0}$ is real, $1$ -per…

Weak separability and partial Fermi isospectrality of discrete periodic SchrÃ¶dinger operators

On the inverse transmission eigenvalue problem with a piecewise W21​ refractive index

On the perturbed periodic SchrÃ¶dinger operators with separate resonant embedded eigenvalues

On the inverse transmission eigenvalue problem with a piecewise $W_{2}^{1}$ refractive index