http://hdl.handle.net/11320/21375 Sat, 31 Oct 2026 02:19:54 GMT 2026-10-31T02:19:54Z http://hdl.handle.net/11320/21388 Tytuł: Difference and Difference Quotient Autorzy: Li, Bo; Zhang, Yan; Liang, Xiquan Abstrakt: In this article, we give the definitions of forward difference, backward difference, central difference and difference quotient, and some of their important properties. Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/11320/21388 2006-01-01T00:00:00Z http://hdl.handle.net/11320/21384 Tytuł: Several Differentiation Formulas of Special Functions. Part IV Autorzy: Li, Bo; Wang, Peng Abstrakt: In this article, we give several differentiation formulas of special and composite functions including trigonometric function, polynomial function and logarithmic function. Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/11320/21384 2006-01-01T00:00:00Z http://hdl.handle.net/11320/21382 Tytuł: The Definition of Finite Sequences and Matrices of Probability, and Addition of Matrices of Real Elements Autorzy: Zhang, Bo; Nakamura, Yatsuka Abstrakt: In this article, we first define finite sequences of probability distribution and matrices of joint probability and conditional probability. We discuss also the concept of marginal probability. Further, we describe some theorems of matrices of real elements including quadratic form. Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/11320/21382 2006-01-01T00:00:00Z http://hdl.handle.net/11320/21381 Tytuł: Connectedness and Continuous Sequences in Finite Topological Spaces Autorzy: Nakamura, Yatsuka Abstrakt: First, equivalence conditions for connectedness are examined for a finite topological space (originated in [9]). Secondly, definitions of subspace, and components of the subspace of a finite topological space are given. Lastly, concepts of continuous finite sequence and minimum path of finite topological space are proposed. Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/11320/21381 2006-01-01T00:00:00Z