Chinese Quarterly Journal of Mathematics

Current Issue

30 March 2025, Volume 40 Issue 1

Previous Issue

High Energy Normalized Solutions for the Schrödinger Equations with Exponential Critical Growth

ZHANG Xiao-cang, XU Li-ping

2025, 40(1): 1-19.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.001

Asbtract ( 20 )

PDF (417KB) ( 14 )

Related Articles | Metrics

In this paper, we study high energy normalized solutions for the following Schrödinger equation ……

A Note on a Result Due to Sauer and Schweizer

WANG Guang-sheng, LI Fei, XU Yan

2025, 40(1): 20-25.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.002

Asbtract ( 16 )

PDF (254KB) ( 9 )

Related Articles | Metrics

n this paper, we obtain some normality criteria for families of meromorphic functions concering shared values, which extends the related results of Schwick, and SauerSchweizer, and can be viewed as a complement of the related results due to Pang-Zalcman, Xu-Fang.

The w-(b,c)-Core Inverse

FANG Li, ZHAO Liang

2025, 40(1): 26-35.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.003

Asbtract ( 29 )

PDF (308KB) ( 5 )

Related Articles | Metrics

We introduce and study a new kind of generalized inverses named w-(b,c)-core inverses, which is a generalization of the (b,c)-core inverse. An example is given to show that w-(b,c)-core inverses need not be (b,c)-core inverses. In addition, the dual version of the w-(b,c)-core inverse is studied. Some results on (b,c)-core inverses and e-(b,c)-core
inverses are unified and generalized.

The Varieties of Semi-Conformal Vectors of Rank-One Even Lattice Vertex Operator Algebras

CHU Yan-jun, GAO Yi-bo

2025, 40(1): 36-48.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.004

Asbtract ( 19 )

PDF (430KB) ( 17 )

Related Articles | Metrics

In this paper, we shall study structures of even lattice vertex operator algebras by using the geometry of the varieties of their semi-conformal vectors. We first give the varieties of semi-conformal vectors of a family of vertex operator algebras……

On Wiener Index of Power of Paths and Cycles

LIU Sai-hua, LI Xiao-rong

2025, 40(1): 49-58.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.005

Asbtract ( 18 )

PDF (328KB) ( 6 )

Related Articles | Metrics

The Wiener index of a graph is defined to be the sum of the distances of all pairs of vertices in the graph. The kth power G^kof a graph G is the graph on V (G) and two vertices are adjacent if and only if their distance in G is less or equal to k. In this paper, we computed the Wiener index of the kth power of paths and cycles for any k ≥2.

Power Options Pricing under Markov Regime-Switching Two-Factor Stochastic Volatility Jump-Diffusion Model

韩书书, 韦煜明

2025, 40(1): 59-73.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.006

Asbtract ( 20 )

PDF (558KB) ( 23 )

Related Articles | Metrics

In this paper, we incorporate Markov regime-switching into a two-factor stochastic volatility jump-diffusion model to enhance the pricing of power options. Furthermore, we assume that the interest rates and the jump intensities of the assets are stochastic. Under the proposed framework, first, we derive the analytical pricing formula for power options by using Fourier transform technique, Esscher transform and characteristic function. Then we provide the efficient approximation to calculate the analytical pricing formula of power options by using the FFT approach and examine the accuracy of the approximation by Monte Carlo simulation. Finally, we provide some sensitivity analysis of the model parameters to power options. Numerical examples show this model is suitable for empirical work in practice.

Blow-Up Solutions in a Parabolic Equation with Variable Coefficients and Memory Boundary Flux

ZHANF An-lei, LIU Bing-chen

2025, 40(1): 74-81.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.007

Asbtract ( 17 )

PDF (280KB) ( 6 )

Related Articles | Metrics

This paper deals with a semilinear parabolic problem involving variable coefficients and nonlinear memory boundary conditions. We give the blow-up criteria for all nonnegative nontrivial solutions, which rely on the behavior of the coefficients when time variable tends to positive infinity. Moreover, the global existence of solutions are discussed for non-positive exponents.

Novel Results on the Multi-Parameters Mittag-Leffler Function

PAN Yu-mei, LI Yu-fen, CAI Dong-xin, YAN Xing-jie

2025, 40(1): 82-92.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.008

Asbtract ( 16 )

PDF (328KB) ( 12 )

Related Articles | Metrics

In this article, the multi-parameters Mittag-Leffler function is studied in detail. As a consequence, a series of novel results such as the integral representation, series representation and Mellin transform to the above function, are obtained. Especially, we associate the multi-parameters Mittag-Leffler function with two special functions which are the generalized Wright hypergeometric and the Fox’s-H functions. Meanwhile, some interesting integral operators and derivative operators of this function, are also discussed

On α-Bloch Functions in Several Complex Variables

ZHU Ting, YANG Liu

2025, 40(1): 93-102.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.009

Asbtract ( 23 )

PDF (356KB) ( 5 )

Related Articles | Metrics

In this paper, we establish characterizations of α-Bloch functions and little α-Bloch functions on the unit ball as well as the unit polydisk of C^m, which generalize and improve results of Aulaskari-Lappan, Minda, Aulaskari-Wulan, and Wu. Some examples are also given to complement our theory.

A Novel Property of Generalized Fibonacci Sequence in Grids

YANG Zi-xian, BAI Jian-chao

2025, 40(1): 103-110.

doi:10.13371/j.cnki.chin.q.j.m.2025.01.010

Asbtract ( 11 )

PDF (1733KB) ( 1 )

Related Articles | Metrics

Fibonacci sequence, generated by summing the preceding two terms, is a classical sequence renowned for its elegant properties. In this paper, leveraging properties of generalized Fibonacci sequences and formulas for consecutive sums of equidistant sub-sequences, we investigate the ratio of the sum of numbers along main-diagonal and sub-diagonal of odd-order grids containing generalized Fibonacci sequences. We show that this ratio is solely dependent on the order of the grid, providing a concise and splendid identity.