Tsukuba Journal of Mathematics

Author

Title

Page

Masahiro Kaminaga and Fumihiko Nakano

Spectral properties of quasiperiodic Kronig-Penney model

Aleksander Grytczuk and Jaroslaw Grytczuk

Ljunggren's trinomials and matrix equation Ax+Ay=Az

Yoshitomo Baba and Hiroyuki Miki

On strongly almost hereditary rings

Naoya Ando

A class of real-analytic surfaces in the 3-Euclidean space

Shuan-hong Wang

A construction of braided Hopf algebras

Masanori Kozaki and Sadahiro Maeda

A characterization of extrinsic spheres in a Riemannian manifold

J.N. Alonso Alvarez, J.M. Fernandez Vilaboa and R. Gonzalez Rodriguez

The Hopf algebra structure of a crossed product in a braided monoidal category

Masakazu Takiguchi

An extension of Rauch comparison theorem to glued Riemannian spaces

Norifumi Yamatani

S4-formula and S2-formula for quasi-triangular biFrobenius algebras

Sorin Dragomir and Jun Masamune

Cauchy-Riemann orbifolds

Reiko Sakamoto

Dirichlet-Neumann problem in a domain with piecewise-smooth boundary

Kazunari Sugiyama

b-Functions of regular simple prehomogeneous vector spaces

Author

Title

Page

Massimo Cicognani

The Cauchy Problem for Strictly Hyperbolic Operators with Non-Absolutely Continuous Coefficients

Ryszard Deszcz and Marian Hotlos

On Some Pseudosymmetry Type Curvature Condition

Noriaki Umeda

Blow-up and Large Time Behavior of Solutions of a Weakly Coupled System of Reaction-Diffusion Equations

Byung Keun Sohn and Dae Hyeon Pahk

Analytic Representation of Generalized Tempered Distributions of Exponential Growth by Wavelets

Zhou Jianwei

Irreducible Clifford Modules

Zhou Jianwei

Spinors, Calibrations and Grassmannians

Antonio J. Di Scala

Autoparallel distributions and splitting theorems

Charles B. Ragozzine, Jr

Hopf Algebras Generated by a Coalgebra

Osamu SHUKUZAWA

Diagonalization of elements of Freudenthal R-vector space and split Freudenthal R-vector space

Kuniko SAKAMOTO

Three-Distance Sequences with Three Symbols

Katsuro Sakai and Masato Yaguchi

Characterizing Manifolds Modeled on Certain Dense Subspaces of Non-Separable Hilbert Spaces

Takao Komatsu

Simple Continued Fraction Expansions of Some Values of Certain Hypergeometric Functions

Kazuya Hayashida

Unique continuation for fast diffusion

Daniele Del Santo and Martino Prizzi

A remark on well-posedness for hyperbolic equations with singular coefficients

Toshikazu Miyashita

Fixed points subgroups by two involutive automorphisms σ, γ of compact exceptional Lie groups F₄, E₆ and E₇

Author

Title

Page

Fumihiko HIROSAWA and Hideo NAKAZAWA

Rapid decay of the total energy for dissipative wave equations

Atsuko Fujisawa

The classification of 3-dimensional hypersurface purely elliptic singularities of (0,1)-type

Seiji Hiraba

Asymptotic estimates for densities of multi-dimensional stable distributions

Tetsuya Hosaka

A splitting theorem for CAT (0) spaces with the geodesic extension property

Mohamed Tahar Kadaoui ABBASSI and Maati SARIH

Killing vector fields on tangent bundles with Cheeger-Gromoll metric

Koji Tsushima

On a decomposition of Bruhat type for a certain finite group

Saburo UCHIYAMA

On the generalized Josephus problem

J. Hancl and S. Sobkova

A general criterion for linearly unrelated sequences

Satoru Kikuchi

Bound for the Weierstrass weights of points on a smooth plane algebraic curve

Taka-aki Tanaka

Algebraic independence of Fibonacci reciprocal sums associated with Newton's method

Tatsuo Nishitani and Jean Vaillant

Smoothly symmetrizable systems and the reduced dimensions II

Yoshio Tanaka and Yuuko Shimizu

Products of k-spaces, and special countable spaces

Yuki Kurokawa and Hiroyuki Takamura

A weighted pointwise estimate for two dimensional wave equations and its application to nonlinear systems

Author

Title

Page

Analytic smoothing effects for a class of dispersive equations

Masakazu Takamura

On the Estimate of the Arithmetic Genus for Normal Two-Dimensional Singularities on Double Coverings

Takashi SADAMATSU

On a necessary condition for the wellposedness of the Cauchy problem for some degenerate parabolic equations

Shou Lin and Li Yan

A note on spaces with σ-compact-finite weak base

Mitsuaki Yato

On the Verschiebung morphism for g(λ)

Nobutaka Boumuki

Isotropic immersions and parallel immersions of space forms into space forms

Tomonori Noda

Reduciton of locally conformal symplectic manifolds with examples of non-Kähler Manifolds

Alessandro Morando

Hypoellipticity and local solvability of pseudolocal continuous linear operators in Gevrey classes

H. Murat Tuncali and Vesko Valov

On Finite-dimensional maps

Alessandro Languasco

On the exceptional set of Hardy-Littlewood's numbers in short intervals

Piotr Dacko

On almost para-cosymplectic manifolds

Yanhua Wang and Pu Zhang

Construct bi-Frobenius algebras via quivers

Naoya Ando

Parallel curved surfaces

Author

Title

Page

Joujuu Ohmori

Simple components of Q [Sp₄(F_q)]

E. Ballico

Holomorphic vector bundles on quadric hypersurfaces of infinite-dimensional projective spaces

Nobuya Suzuki

Quantifier elimination results for products of ordered Abelian groups

Edgar E. Enochs and Overtoun M. G. Jenda

Gorenstein injective modules and Ext

Marco Cappiello

Fourier integral operators of infinite order and applications to SG-hyperbolic equations

Tatsuji Tanaka

On arithmetical bounds of Chow-forms

Shuan-hong Wang

A Maschke Type Theorem for Hopf π-Comodules

Masafumi Yoshino

Diophantine phenomena in commuting vector fields and diffeomorphisms

Filip Defever and R.Rosca

Riemannian manifolds structured by a local conformal section

Elisabetta Barletta and Sorin Dragomir

On the regularity of weak subelliptic F-harmonic maps

Reiko SAKAMOTO

Restricted energy inequalities and numerical approximations

T.Banakh, R.Cauty, K.Trushchak, and L.Zdomskyi

On Universality of Finite Products of Polish Spaces