60 Result(s)
within
Analysis
Geometry
Mathematics, general
**hu Li
Mathematics
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Article
Dividend Payments in a Perturbed Compound Poisson Model with Stochastic Investment and Debit Interest
We consider a compound Poisson insurance risk model perturbed by diffusion with stochastic return on investment and debit interest. If the initial surplus is nonnegative, then the insurance company can invest ...
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Article
A Remark on John–Nirenberg Theorem for Martingales
The paper is mainly devoted to establishing an extension of the John–Nirenberg theorem for martingales. More precisely, let 1 < p < ∞ and 0 < q < ∞. If the stochastic basis (Fn)n≥0 is regular, then BMOp,q = BMO1 ...
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Article
A Class of Double Crossed Biproducts
Let H be a bialgebra, let A be an algebra and a left H-comodule coalgebra, and let B be an algebra and a right H-comodule coalgebra. Also let f : H ⨂ H → A ⨂ H, R : H ⨂ A → A ⨂ H, and T : B ⨂ H → H ⨂ B be linear ...
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Article
Decay Estimates for a Kind of Linear Wave Equations
We consider one kind of dissipative wave equations with exponential speed of propagation. An arbitrary power decay rate for the L2 -norm and energy is obtained by using the multiplier method.
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Article
Boundedness of bi-parameter Littlewood–Paley operators on product Hardy space
Let \(n_1=n\ge 1, n_2=m\ge 1\) ...
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Article
Discrete-time models for releases of sterile mosquitoes with Beverton–Holt-type of survivability
In this paper, we formulate discrete-time mathematical models for the interactive wild and sterile mosquitoes. Instead of the Ricker-type of nonlinearity for the survival functions, we assume the Beverton–Holt...
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Article
Groups All Cyclic Subgroups of Which are BNA-Subgroups
Suppose that G is a finite group and H is a subgroup of G. We say that H is a BNA-subgroup of G if either H x = H or x ∈ <H, H ...
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Article
On the Derived Norm of a Finite Group
Given a finite group G, we define a subgroup CS(G) as the intersection of the normalizers of all subgroups of the derived subgroup of G. Let CS 0 = 1. We define CS
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Article
A Note on SΦ-Supplemented Subgroups
We give new and brief proofs of the results obtained by X. Li and T. Zhao [Ukr. Math. J., 64, No. 1, 102–109 (2012)].
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Article
The locus of curves with \(D_n\) -symmetry inside \(\mathfrak M_g\)
The aim of this paper is to determine the irreducible components of \(\mathfrak {M}_{g}(D_n)\)
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Article
Certain Regularity of the Entropy Solutions for Nonlinear Parabolic Equations with Irregular Data
We introduce new sets of functions different both from the space introduced in [Ph. Bénilan, L. Boccardo, T. Gallouёt, R. Gariepy, M. Pierre, and J. L. Vazquez, Ann. Scuola Norm. Super. Pisa, 22, No. 2, 241–273 (...
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Article
Notes on the Uniqueness and Value Sharing for Meromorphic Functions Concerning Differential Polynomials
We study the problem of uniqueness of meromorphic functions concerning differential polynomials, and obtain some results. These results improve the results obtained earlier by Li [J. Sichuan Univ. (Natural Sci...
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Article
CLT-Groups with Hall S-Quasinormally Embedded Subgroups
A subgroup H of a finite group G is said to be Hall S-quasinormally embedded in G if H is a Hall subgroup of the S-quasinormal closure H SQG . W...
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Article
s-Conditionally Permutable Subgroups and p-Nilpotency of Finite Groups
We study the p-nilpotency of a group such that every maximal subgroup of its Sylow p-subgroups is s-conditionally permutable for some prime p. By using the classification of finite simple groups, we get interesti...
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Article
Second Maximal Subgroups of a Sylow p-Subgroup and the p-Nilpotency of Finite Groups
A subgroup H of a group G is said to be weakly s-semipermutable in G if G has a subnormal subgroup T such that HT = G and H ∩ T ≤ ...
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Article
Remainders of Semitopological Groups or Paratopological Groups
We mainly discuss the remainders of Hausdorff compactifications of paratopological groups or semitopological groups. Thus, we show that if a nonlocally compact semitopological group G has a compactification bG su...
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Article
Vertex Operator Representations of Type C l (1) and Product-Sum Identities
We construct a class of homogeneous vertex representations of C l (1) , l ≥ 2, and ded...
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Article
Lyapunov-Type Inequalities for Quasilinear Systems with Antiperiodic Boundary Conditions
We establish some new Lyapunov-type inequalities for one-dimensional p-Laplacian systems with antiperiodic boundary conditions. The lower bounds of eigenvalues are presented.
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Article
On the Restricted Projective Dimension of Complexes
We study the restricted projective dimension of complexes and give some new characterizations of the restricted projective dimension. In particular, it is shown that the restricted projective dimension can be ...
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Article
Quasiunit regularity and QB-rings
Some relations for quasiunit regular rings and QB-rings, as well as for pseudounit regular rings and QB ∞-rings, are obtained. In the first part of the paper, we prove that (an exchange ring R is ...
