کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6423442 1342375 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The last twenty orders of (1,2)-resolvable Steiner quadruple systems
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات گسسته و ترکیبات
پیش نمایش صفحه اول مقاله
The last twenty orders of (1,2)-resolvable Steiner quadruple systems
چکیده انگلیسی

A Steiner quadruple system (X,B) is said to be (1,2)-resolvable if its blocks can be partitioned into r parts such that each point of X occurs in exactly two blocks in each part. The necessary condition for the existence of (1,2)-resolvable Steiner quadruple systems RSQS(1,2,v)s is v≡2 or 10 (mod 12). Hartman and Phelps in [A. Hartman, K.T. Phelps, Steiner quadruple systems, in: J.H. Dinitz, D.R. Stinson (Eds.), Contemporary Design Theory, Wiley, New York, 1992, pp. 205-240] posed a question whether the necessary condition for the existence of (1,2)-resolvable Steiner quadruple systems is sufficient. In this paper, we consider the last twenty orders of (1,2)-resolvable Steiner quadruple systems and show that the necessary condition for the existence of (1,2)-resolvable Steiner quadruple systems is also sufficient except for the order 10.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Discrete Mathematics - Volume 312, Issue 24, 28 December 2012, Pages 3574-3584
نویسندگان
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