For a given sequence of nonincreasing numbers, d = (d(1),..., d(n)), a necessary and sufficient condition is presented to characterize d when its realization is a unique labelled simple graph. If G is a graph, we consider the subgraph G' of G with maximum edges which is uniquely determined with respect to its degree sequence. We call the set of E(G)\E(G') the smallest edge defining set of G. This definition coincides with the similar one in design theory.
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Kalasalingam Acad Res & Educ, Dept Math, Krishnankoil 626126, Tamil Nadu, IndiaKalasalingam Acad Res & Educ, Dept Math, Krishnankoil 626126, Tamil Nadu, India
Chelladurai, Gayathri
Kalimuthu, Karuppasamy
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Kalasalingam Acad Res & Educ, Dept Math, Krishnankoil 626126, Tamil Nadu, IndiaKalasalingam Acad Res & Educ, Dept Math, Krishnankoil 626126, Tamil Nadu, India
Kalimuthu, Karuppasamy
Soundararajan, Saravanakumar
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Thiagarajar Coll Engn, Dept Math, Madurai 625015, Tamil Nadu, IndiaKalasalingam Acad Res & Educ, Dept Math, Krishnankoil 626126, Tamil Nadu, India