Forbidden Triples Generating a Finite set of 3-Connected Graphs

نویسندگان

  • Yoshimi Egawa
  • Jun Fujisawa
  • Michitaka Furuya
  • Michael D. Plummer
  • Akira Saito
چکیده

For a graph G and a set F of connected graphs, G is said be F-free if G does not contain any member of F as an induced subgraph. We let G3(F) denote the set of all 3-connected F-free graphs. This paper is concerned with sets F of connected graphs such that |F| = 3 and G3(F) is finite. Among other results, we show that for an integer m > 3 and a connected graph T of order greater than or equal to 4, G3({K4,K2,m, T}) is finite if and only if T is a path of order 4 or 5.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Forbidden subgraphs and the existence of a 2-factor

For a connected graph H, a graph G is said to be H-free if G does not contain an induced subgraph which is isomorphic to H, and for a set of connected graphs H, G is said to be H-free if G is H-free for every H ∈ H. The set H is called a forbidden subgraph. In particular, if |H| = 2 (resp. |H| = 3), we often call H a forbidden pair (resp. forbidden triple). In 1991, Bedrossian proved that there...

متن کامل

Computing Szeged index of graphs on ‎triples

ABSTRACT Let ‎G=(V,E) ‎be a‎ ‎simple ‎connected ‎graph ‎with ‎vertex ‎set ‎V‎‎‎ ‎and ‎edge ‎set ‎‎‎E. ‎The Szeged index ‎of ‎‎G is defined by ‎ where ‎ respectively ‎ ‎ is the number of vertices of ‎G ‎closer to ‎u‎ (‎‎respectively v)‎ ‎‎than ‎‎‎v (‎‎respectively u‎).‎ ‎‎If ‎‎‎‎S ‎is a‎ ‎set ‎of ‎size‎ ‎ ‎ ‎let ‎‎V ‎be ‎the ‎set ‎of ‎all ‎subsets ‎of ‎‎S ‎of ‎size ‎3. ‎Then ‎we ‎define ‎t...

متن کامل

Forbidden subgraphs generating a finite set

For a set F of connected graphs, a graph G is said to be F-free if G does not contain any member of F as an induced subgraph. The members of F are referred to as forbidden subgraphs. When we study the relationship between forbidden subgraphs and a certain graph property, we often allow the existence of exceptional graphs as long as their number is finite. However, in this type of research, if t...

متن کامل

Potential forbidden triples implying hamiltonicity: for sufficiently large graphs

In [2], Brousek characterizes all triples of connected graphs, G1, G2, G3, with Gi = K1,3 for some i = 1, 2, or 3, such that all G1G2G3free graphs contain a hamiltonian cycle. In [8], Faudree, Gould, Jacobson and Lesniak consider the problem of finding triples of graphs G1, G2, G3, none of which is a K1,s, s ≥ 3 such that G1G2G3-free graphs of sufficiently large order contain a hamiltonian cycl...

متن کامل

Path Graphs, Clique Trees, and Flowers

An asteroidal triple is a set of three independent vertices in a graph such that any two vertices in the set are connected by a path which avoids the neighbourhood of the third. A classical result by Lekkerkerker and Boland [10] showed that interval graphs are precisely the chordal graphs that do not have asteroidal triples. Interval graphs are chordal, as are the directed path graphs and the p...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Electr. J. Comb.

دوره 22  شماره 

صفحات  -

تاریخ انتشار 2015