کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4946011 | 1364079 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
CIO and ring graphs: Deficiency and testing
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
هوش مصنوعی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: CIO and ring graphs: Deficiency and testing CIO and ring graphs: Deficiency and testing](/preview/png/4946011.png)
چکیده انگلیسی
We give a polynomial time algorithm that tests whether a graph is a theta-ring graph or equivalently if a graph has the âθâÎ-property (each chorded-theta has a transversal triangle). It is known that G is a theta-ring graph if and only if G is a CIO graph (each toric ideal associated to an edge orientation of G is a binomial complete intersection). In particular ring graphs are theta-ring graphs. We prove that the forbidden induced subgraphs that characterize ring graphs are chorded-thetas and K4. We introduce a new graph invariant, the CIO deficiency. This invariant has the property that graphs with CIO deficiency zero are exactly CIO graphs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Symbolic Computation - Volume 79, Part 2, MarchâApril 2017, Pages 249-268
Journal: Journal of Symbolic Computation - Volume 79, Part 2, MarchâApril 2017, Pages 249-268
نویسندگان
Isidoro Gitler, Enrique Reyes, Juan A. Vega,