ArticleOriginal scientific text
Title
Associative graph products and their independence, domination and coloring numbers
Authors 1, 2
Affiliations
- Dalhousie University
- Furman University
Abstract
Associative products are defined using a scheme of Imrich & Izbicki [18]. These include the Cartesian, categorical, strong and lexicographic products, as well as others. We examine which product ⊗ and parameter p pairs are multiplicative, that is, p(G⊗H) ≥ p(G)p(H) for all graphs G and H or p(G⊗H) ≤ p(G)p(H) for all graphs G and H. The parameters are related to independence, domination and irredundance. This includes Vizing's conjecture directly, and indirectly the Shannon capacity of a graph and Hedetniemi's coloring conjecture.
Keywords
graph products, independence, domination, irredundance, coloring
Bibliography
- M. Behzad, G. Chartrand and L. Lesniak-Foster, Graphs and Digraphs (Prindle, Weber & Schmidt International Series, 1979).
- C. Berge, The Theory of Graphs and Its Applications (London, Methuen, 1962) MR 24 #A2381.
- M. Borowiecki, On chromatic number of products of two graphs, Coll. Math. 25 (1972) 49-52; MR 46 #1630.
- M. Borowiecki, On the graphs with minimaximal kernels, Scientific Papers Inst. Math. Wroc aw Techn. Univ. 17 (1977) 3-7; Zbl. 398:05C064.
- E.J. Cockayne, S.T. Hedetniemi and D.J. Miller, Properties of hereditary hypergraphs and middle graphs, Canad. Math. Bull. 21 (1978) 461-468; MR 80m:05087.
- M. El-Zahar and N. W. Sauer, The chromatic number of the product of two 4-chromatic graphs is 4, Combinatorica 5 (1985) 121- 126; MR 87a:05067.
- D. Geller and S. Stahl, The chromatic number and other functions of the lexicographic product, J. Combin. Theory (B) 19 (1975) 87-95; MR 52#13462.
- E.N. Gilbert, Unpublished Technical Memorandum, Bell Telephone Laboratories, Murray Hill, New Jersey (1972).
- F. Harary and G. W. Wilcox, Boolean operations on graphs, Math. Scand. 20 (1967) 41-51; MR 35 #2775.
- B. Hartnell and D. Rall, On Vizing's Conjecture, Congressus Numerantium 82 (1991) 87-96; MR 92k:05071.
- B. Hartnell and D. Rall, Vizing's conjecture and the one-half argument, Discussiones Mathematicae-Graph Theory 15 (1995) 205-216, doi: 10.7151/dmgt.1018.
- S. T. Hedetniemi, Homomorphisms of graphs and automata, University of Michigan Technical Report 03105-44-T (1966).
- P. Hell and D.J. Miller, Achromatic numbers and graph operations, Discrete Math. 108 (1992) 297-305; MR 93k:05062.
- P. Hell and F.S. Roberts, Analogues of the Shannon capacity of a graph, Theory and practice of combinatorics, SE-North-Holland Math. Stud., 60, North-Holland, Amsterdam-New York (1982) 155-168; MR 86k:05053.
- A.J.W. Hilton, R. Rado and S.H. Scott, A (< 5)-colour theorem for planar graphs, Bull. London Math. Soc. 5 (1973) 302-306; MR 48 #1960.
- L.-H. Hsu, On a multiplicative graph function conjecture, Discrete Math. 45 (1983) 245-253; MR 84j:05099.
- L.-H. Hsu, On a strongly multiplicative graph function conjecture, Chinese J. Math. 13(2) (1985) 103-108; MR 87a:05127.
- W. Imrich and H. Izbicki, Associative Products of Graphs, Monatshefte für Mathematik 80 (1975) 277-281; MR 53 #7864.
- M.S. Jacobson and L.S. Kinch, On the domination of the products of graphs II, trees, J. Graph Theory 10 (1986) 97-106; MR 87e:05056.
- L. Lovász, On the Shannon Capacity of a Graph, IEEE Trans. on Inform. Theory, IT-25(1) (1979) 1-7; MR 81g:05095.
- J. Ne set ril and V. Rödl, Products of graphs and their applications, in: Graph Theory, agów 1981 (Lecture Notes in Mathematics 1018, Springer, Berlin, 1983) 151-160; MR 85d:05179.
- R.J. Nowakowski and D. Rall, A survey of the introduction and history of graph products, preprint.
- O. Ore, Theory of Graphs (Amer. Math. Colloq. Publ., Vol. 38, Amer. Math. Soc., Providence, R.I., 1962).
- V. Pus, Chromatic number of products of graphs, Comment. Math. Univ. Carolin. 29 (1988) 457-463; MR 90a:05088.
- F.S. Roberts, Graph theory and its applications to problems of society, CBMS-NSF monographs (1978) #29 (S.I.A.M, Philadelphia, PA); MR 80g:90036.
- F.S. Roberts, On the mobile radio frequency assignment problem and the traffic light phasing problem, in: Second International Conference on Combinatorial Mathematics (New York, 1978), Annals New York Acad. Sci. 319 (1979) 466-483; MR 81e:05071.
- M. Rosenfeld, On a Problem of C.E. Shannon in Graph Theory, Proc. Amer. Math. Soc. 18 (1967) 315-319; MR 34 #7405.
- G. Sabidussi, Graphs with given group and given graph-theoretical properties, Canad. J. Math. 9 (1957) 515-525; MR 20 #1322.
- G. Sabidussi, The composition of graphs, Duke Math. J. 26 (1959) 693-696; MR 22 #1524.
- C.E. Shannon, The zero error capacity of a noisy channel, I.R.E., Trans. on Inform. Theory, IT-2 (1956) 8-19; MR 19 #623.
- V.G. Vizing, The cartesian product of graphs, Vyčisl. Sistemy 9 (1963) 30-43; MR 35 #81.