An Answer to the Conjecture of I. Babuška and T. Janik

In this paper, we verify the conjecture in the recent paper of I. Babuška and T. Janik.     

Integral spinor norms in dyadic local fields Ⅲ

In this paper we give an alternative computation of integral spinor norms over dyadic local fields by using the Jordan decomposition of W-type.In particular,we emphasize the striking similarity between the theory over dyadic local fields and that over the local fields of characteristic 2.     

Monotone and Čebyšev arcs in hyperspaces

A set in a metric space is called a ?eby?ev set if it contains a unique “nearest neighbour” to each point of the space. In this paper we introduce the concept of a monotone arc of convex sets and show that compact monotone arcs have the ?eby?ev property in the hyperspace of compact strictly convex sets. In the hyperspace of compact convex sets only certain monotone arcs are ?eby?ev ; these are characterized. Results are also obtained for affine segments and for noncompact monotone arcs.     

Regularity results for p-harmonic functions in higher order Grušin planes

We study the interior regularity for nondegenerate p-harmonic functions in Grušin planes of higher order. The local boundedness of the horizontal gradient is obtained by running a subelliptic variant of the Moser iteration scheme.     

Heegaard splittings 的曲面连通和

Suppose Mi = Vi ∪ Wi （i = 1,2） are Heegaard splittings. A homeomorphism f ： F1 → F2 produces an attached manifold M = M1 ∪F1=F2 M2, where Fi ∪→ δ_Wi. In this paper we define a surface sum of Heegaard splittings induced from the Heegaard splittings of M1 and M2, and give a sufficient condition when the surface sum of Heegaard splitting is stabilized. We also give examples showing that the surface sum of Heegaard splittings can be unstabilized. This indicates that the surface sum of Heegaard splittings and the amalgamation of Heegaard splittings can give different Heegaard structures.     

Several splittings for non-Hermitian linear systems

For large sparse non-Hermitian positive definite system of linear equations,we present several variants of the Hermitian and skew-Hermitian splitting(HSS)about the coefficient matrix and establish correspondingly several HSS-based iterative schemes.Theoretical analyses show that these methods are convergent unconditionally to the exact solution of the referred system of linear equations,and they may show advantages on problems that the HSS method is ineffiective.     

Analysis of degenerate elliptic operators of Grušin type

We analyse degenerate, second-order, elliptic operators H in divergence form on L ₂(R ⁿ  × R ^m ). We assume the coefficients are real symmetric and a ₁ H _δ  ≥ H ≥ a ₂ H _δ for some a ₁, a ₂ > 0 where

An arithmetic Bernštein–Kušnirenko inequality

Mathematische Zeitschrift - We present an upper bound for the height of the isolated zeros in the torus of a system of Laurent polynomials over an adelic field satisfying the product formula. This...     

The global Solutions of Nonlinear volterra Integral equation in Abstract

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The Integral Closure of Ideals in ℂ{x,y}

Abstract

We give some techniques to determine the ideal K _I generated by the monomials x ^{k ₁} y ^{k ₂} belonging to the integral closure ī of an ideal I ? ?{x, y}. We also give a sufficient condition for a weighted homogeneous ideal I ? ?{x, y} to satisfy the relation ī = I + K _I .     

Weighted Boundedness for Generalized Maximal andSingular Integral Operators in Orlicz-Morrey Spaces

51.IntroductionTheweightedboundednessformaximalandsingularintegraloperatorsonLp(p>1)andBMofunctionspacesarenowunderstood(see[lj)-AsMorreyspacemaybeconsideredasanextensionofthespaces,itisnaturalandimportanttostudytheweightedbou11dednessformax-imalandsingularintegraloperatorsonMorreyspaces.Thepurposeofthispaperistostu`lythequestion,theweightedboundednessfortheoperatorsinOrlicz-Morreyspacesareobtained,andthecharacterizationsfornon-weightedboundednessofmaximaloperatorarealsoobtained.Someworkint…     

Über die Umformung eines uneigentlichen Doppel-integrals in ein zweimaliges Integral

Ohne Zusammenfassung     

Linear Volterra Integral Equations

The Kurzweil-Henstock integral formalism is applied to establish the existence of solutions to the linear integral equations of Volterra-typewhere the functions are Banach-space valued. Special theorems on existence of solutions concerning the Lebesgu3 integral setting are obtained. These sharpen earlier results.     

On Normal Integral Bases

in this paper, let K = Q ( ) be an abelian number field,where mi's are distinct square-free integers and Gal (K/Q ) (Z/2Z )n+1, and let k Q(M). When k is imaginary or k is real and has a unit of norm -1, we give a necessaryand sufficient condition for K/k to have a normal integral basis.     

The Convergences of Bivariate Integral Jackson Interpolating Operators in Orlicz Spaces

ＴｈｅＣｏｎｖｅｒｇｅｎｃｅｓｏｆＢｉｖａｒｉａｔｅＩｎｔｅｇｒａｌＪａｃｋｓｏｎＩｎｔｅｒｐｏｌａｔｉｎｇＯｐｅｒａｔｏｒｓｉｎＯｒｌｉｃｚＳｐａｃｅｓ尚增科，王有一，盛保怀ＴｈｅＣｏｎｖｅｒｇｅｎｃｅｓｏｆＢｉｖａｒｉａｔｅＩｎｔｅｇｒａｌＪａｃ...     

Solutions of Superlinear Hammerstein Integral Equation in Banach Spaces and Applications

ＳｏｌｕｔｉｏｎｓｏｆＳｕｐｅｒｌｉｎｅａｒＨａｍｍｅｒｓｔｅｉｎＩｎｔｅｇｒａｌＥｑｕａｔｉｏｎｉｎＢａｎａｃｈＳｐａｃｅｓａｎｄＡｐｐｌｉｃａｔｉｏｎｓＬｏｕＢｅｎｄｏｎｇ（娄本东）（Ｄｅｐｔ．ｏｆＭａｔｈ．ＳｈａｎｄｏｎｇＵｎｉｖｅｒｓｉｔｙ，...     

Feller’s Scheme in Approximation by Nonlinear Possibilistic Integral Operators

By analogy with Feller’s general probabilistic scheme used in the construction of many classical convergent sequences of linear operators, in this paper, we consider a Feller-kind scheme based on the possibilistic integral, for the construction of convergent sequences of nonlinear operators. In particular, in the discrete case, all the so-called max-product Bernstein-type operators and their qualitative convergence properties are recovered. Also, discrete nonperiodic nonlinear possibilistic convergent operators of Picard type, Gauss–Weierstrass type and Poisson–Cauchy type are studied and the possibility of introduction of discrete periodic(trigonometric) nonlinear possibilistic operators of de la Vallée–Poussin type, of Fejér type and of Jackson type is mentioned as future directions of research.