Tsukuba Journal of Mathematics

Vol.28, No.1 (2004)
Author  Title  Page   Analytic smoothing effects for a class of dispersive equations  1  Masakazu Takamura  On the Estimate of the Arithmetic Genus for Normal TwoDimensional Singularities on Double Coverings  35  Takashi SADAMATSU  On a necessary condition for the wellposedness of the Cauchy problem for some degenerate parabolic equations  75  Shou Lin and Li Yan  A note on spaces with σcompactfinite weak base  85  Mitsuaki Yato  On the Verschiebung morphism for g(λ)  93  Nobutaka Boumuki  Isotropic immersions and parallel immersions of space forms into space forms  117  Tomonori Noda  Reduciton of locally conformal symplectic manifolds with examples of nonKähler Manifolds  127  Alessandro Morando  Hypoellipticity and local solvability of pseudolocal continuous linear operators in Gevrey classes  137  H. Murat Tuncali and Vesko Valov  On Finitedimensional maps  155  Alessandro Languasco  On the exceptional set of HardyLittlewood's numbers in short intervals  169  Piotr Dacko  On almost paracosymplectic manifolds  193  Yanhua Wang and Pu Zhang  Construct biFrobenius algebras via quivers  215  Naoya Ando  Parallel curved surfaces  223  

Vol.27, No.2 (2003)
Author  Title  Page  Fumihiko HIROSAWA and Hideo NAKAZAWA  Rapid decay of the total energy for dissipative wave equations  217  Atsuko Fujisawa  The classification of 3dimensional hypersurface purely elliptic singularities of (0,1)type  233  Seiji Hiraba  Asymptotic estimates for densities of multidimensional stable distributions  261  Tetsuya Hosaka  A splitting theorem for CAT (0) spaces with the geodesic extension property  289  Mohamed Tahar Kadaoui ABBASSI and Maati SARIH  Killing vector fields on tangent bundles with CheegerGromoll metric  295  Koji Tsushima  On a decomposition of Bruhat type for a certain finite group  307  Saburo UCHIYAMA  On the generalized Josephus problem  319  J. Hancl and S. Sobkova  A general criterion for linearly unrelated sequences  341  Satoru Kikuchi  Bound for the Weierstrass weights of points on a smooth plane algebraic curve  359  Takaaki Tanaka  Algebraic independence of Fibonacci reciprocal sums associated with Newton's method  375  Tatsuo Nishitani and Jean Vaillant  Smoothly symmetrizable systems and the reduced dimensions II  389  Yoshio Tanaka and Yuuko Shimizu  Products of kspaces, and special countable spaces  405  Yuki Kurokawa and Hiroyuki Takamura  A weighted pointwise estimate for two dimensional wave equations and its application to nonlinear systems  417  

Vol.27, No.1 (2003)
Author  Title  Page  Massimo Cicognani  The Cauchy Problem for Strictly Hyperbolic Operators with NonAbsolutely Continuous Coefficients  1  Ryszard Deszcz and Marian Hotlos  On Some Pseudosymmetry Type Curvature Condition  13  Noriaki Umeda  Blowup and Large Time Behavior of Solutions of a Weakly Coupled System of ReactionDiffusion Equations  31  Byung Keun Sohn and Dae Hyeon Pahk  Analytic Representation of Generalized Tempered Distributions of Exponential Growth by Wavelets  47  Zhou Jianwei  Irreducible Clifford Modules  57  Zhou Jianwei  Spinors, Calibrations and Grassmannians  77  Antonio J. Di Scala  Autoparallel distributions and splitting theorems  99  Charles B. Ragozzine, Jr  Hopf Algebras Generated by a Coalgebra  103  Osamu SHUKUZAWA  Diagonalization of elements of Freudenthal Rvector space and split Freudenthal Rvector space  113  Kuniko SAKAMOTO  ThreeDistance Sequences with Three Symbols  129  Katsuro Sakai and Masato Yaguchi  Characterizing Manifolds Modeled on Certain Dense Subspaces of NonSeparable Hilbert Spaces  143  Takao Komatsu  Simple Continued Fraction Expansions of Some Values of Certain Hypergeometric Functions  161  Kazuya Hayashida  Unique continuation for fast diffusion  175  Daniele Del Santo and Martino Prizzi  A remark on wellposedness for hyperbolic equations with singular coefficients  189  Toshikazu Miyashita  Fixed points subgroups by two involutive automorphisms σ, γ of compact exceptional Lie groups F_{4}, E_{6} and E_{7}  199  

Vol.26, No.2 (2002)
Author  Title  Page  Masahiro Kaminaga and Fumihiko Nakano  Spectral properties of quasiperiodic KronigPenney model  205  Aleksander Grytczuk and Jaroslaw Grytczuk  Ljunggren's trinomials and matrix equation Ax+Ay=Az  229  Yoshitomo Baba and Hiroyuki Miki  On strongly almost hereditary rings  237  Naoya Ando  A class of realanalytic surfaces in the 3Euclidean space  251  Shuanhong Wang  A construction of braided Hopf algebras  269  Masanori Kozaki and Sadahiro Maeda  A characterization of extrinsic spheres in a Riemannian manifold  291  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  299  Masakazu Takiguchi  An extension of Rauch comparison theorem to glued Riemannian spaces  313  Norifumi Yamatani  S4formula and S2formula for quasitriangular biFrobenius algebras  339  Sorin Dragomir and Jun Masamune  CauchyRiemann orbifolds  351  Reiko Sakamoto  DirichletNeumann problem in a domain with piecewisesmooth boundary  387  Kazunari Sugiyama  bFunctions of regular simple prehomogeneous vector spaces  407  

Vol.26, No.1 (2002)
Author  Title  Page  Gladys Chalom and Hector Merklen  Representation type of one point extensions of tilted euclidean algebras  1  Yasuo Kamata  The algorithm to calculate the period matrix of the curve x^{m} + y^{n}=1  15  Yasuyuki Nagatomo  Singular sets of ideal instantons and Poincare duality  39  Wu BingYe  1Type minimal surfaces in complex Grassmann manifolds and its Gauss map  49  Hong Jae Kang  Integral geometry on product of spheres  61  Satomi Oka  On the common divisor of discriminants of integers  69  Reiko Sakamoto  Numerical approximation of weak solutions for boundary value problems  79  Bangyen Chen and Luc Vrancken  Lagrangian submanifolds of the complex hyperbolic space  95  Tooru Sasahara  On Chen invariant of CRsubmanifolds in a complex hyperbolic space  119  E. Ballico  Trigonal Gorenstein curves and Weierstrass points  133  Camillo Costantini and Valentin Gutev  Recognizing special metrics by topological properties of the "metric"proximal hyperspace  145  Toshiyuki Ichiyama  The first variation formula for Weyl structures  171  Adriana Nenciu  The center construction for weak Hopf algebras  189  