2 papers
math.SP2018
Formula for The IDS of Periodic Jacobi Matrices
Liangping Qi
We prove that on the spectrum the integrated density of states (IDS for short) of periodic Jacobi matrices is related to the discriminant. The method is to count the number of gene…
math.CA2018
Factorization of Scalar Piecewise Continuous Almost Periodic Functions
Liangping Qi, Rong Yuan
This paper is to characterize piecewise continuous almost periodic functions as the product of Bohr almost periodic functions and sequences. As an application, the result is used t…