Download or read book Mathematical Combinatorics, Vol. 1/2009 written by Linfan Mao and published by Infinite Study. This book was released on with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers on Problems of Persons with Disability (PWD) Using FRMs, Topological Multi-groups and Multi-fields, Involute and Evolute Curves of Spacelike Curve with a Spacelike Principal Normal in Minkowski 3-Space, Smarandache Breadth Pseudo Null Curves in Minkowski Space-time, and similar topics. Contributors: W.B. Vasantha Kandasamy, A.Praveen Prakash, K. Thirusangu, Bahaddin Bukcu, Murat Kemal Karacan, Shreedhark, B. Sooryanarayana, and others.