Author Title Page Lewis D. Ludwig, Peter Nyikos, and John E. Porter Dowker spaces revisited 1 Takumi Ogawa and Yasuo Kamata A product formula defined by the Beta function and Gauss's hypergeometric function 13 Nobuhiro Aki and Michio Amano On the Cartier duality of certain finite group schemes of type $(p^n, p^n)$ 31 Kim Hyo Gyeong The construction of the uniformly minimum variance unbiased estimator 47 Soumya Das Note on Hermitian Jacobi forms 59 Kenta Ueyama Geometric classification of quadratic algebras in two variables 79 Shunsuke Murata Bernoulli-type relations in some noncommutative polynomial ring 97 Kazuhiro Okumura Odd dimentional Riemannian submanifolds admitting the almost contact metric structure in a Euclidean sphere 117 Mohammed Hichem Mortad Similarities involving unbounded normal operators 129
 Author Title Page Naoyuki Koike Hermann type actions on a pseudo-Riemannian symmetric space 137 Hiroyuki Nakaoka Comparison of the definitions of abelian 2-categories 173 Nobuhiro Aki On the Cartier duality of certain finite group schemes of type $(p^n ,..., p^n)$ 183 Hisashi Kojima On Siegel modular cusp forms of degree two. 201 Tomoo Yokoyama On some classes of spectral posets 213 Tomoyuki Kakehi and Kensuke Sakai Behavior of solutions to linear and semilinear parabolic pseudo-differential equations 221 Takeshi Kurosawa, Yohei Tachiya, and Taka-aki Tanaka Algebraic independence of infinite products generated by Fibonacci numbers 255 Takashi Kondo On the group of extensions Ext^1(G^$(&lambda)$_0),E^$(&lambda)$,...,$(&lambda)$_n)) over a discrete valuation ring 265
 Author Title Page Ayato Mitsuishi The Gromov-Hausdorff distances between Alexandrov spaces of curvature bounded below by 1 and the standard spheres 1 Renato Manfrin Propagation of analyticity in the $C^\infty$ solutions of quasi-linear weakly hyperbolic wave equations 13 Hiroyuki Kurihara The structure Jacobi operator for real hypersurfaces in the complex projective plane and the complex hyperbolic plane 53 Takashi Shimomura Chain mixing endomorphisms are approximated by subshifts on the Cantor set 67 Nobuhiro Innami, Yukihiro Mashiko, and Katsuhiro Shiohama Metric spheres in the projective spaces with constant holomorphic sectional curvature 79 Changwen Li On weakly s-quasinormally embedded and ss-quasinormal subgroups of finite groups 91 Mikhail Sgibnev An asymptotic expansion for the distribution of the supremum of a Markov-modulated random walk 103 Michio Hamada On the quasi-irreducibility and complete quasi-reducibility of some reductive prehomogeneous vector spaces 115 Atsushi Ishii and Kengo Kishimoto The Quandle coloring invariant of a reducible handlebody-knot 131 Yuki Anbo Random graphs with a randam bijection 143
 Author Title Page Kunihiko Kajitani Asymptotic behaviors for multidimensional Kirchhoff equations 1 Keiichi Kikuchi The construction of rotation surfaces of constant mean curvature and the corresponding Lagrangians 43 Masaru Kada and Yasuo Yoshinobu Galois-Tukey connection involving sets of metrics 53 Tomohiro Fukaya Sublinear Higson corona of Euclidean cone 67 Yasutomo Asai Loop groups $SL_2(F[X,X^-1])$, universal central     extensions  and additive Steinberg symbols 79 Mayuko Kon Pseudo-parallel CR submanifolds of a complex space form 99 Takao Hayami Hochschild cohomology ring of a maximal order of the quaternion algebra 111 Gao-Yan Jia and Zhen-Rong Zhou Gaps of $F$-Yang-Mills fields on submanifolds 121 Yoshiteru Kurosawa On a classification of 3-simple prehomogeneous vector spaces with two irreducible components 135