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Published in:   Vol. 2 Issue 2 Date of Publication:   December 2013

Pair Sum Labeling Of Some Special Graphs

K. Manimekalai,K.Thirusangu

Page(s):   83-85 ISSN:   2278-2397
DOI:   10.20894/IJCOA.101.002.002.003 Publisher:   Integrated Intelligent Research (IIR)

Let G be a (p, q) graph. A one-one map f : V(G)  {1, 2, , p} is said to be a pair sum labeling if the induced edge function, fe : E(G)  Z {0} defined by fe(uv) = f(u) + f(v) is one-one and fe(E(G)) is either of the form {k1, k2, , kq/2} or {k1, k2, , k(q1)/2}  {k(q+1)/2} according as q is even or odd. Recently, the pair sum labeling is introduced by R.Ponraj, J. V. X. Parthipan. In this paper we study about the pair sum labeling of coconut tree CT(m, n), the the Y-tree Yn+1, Jelly fish J(m, n), (m, 2)-kite, (m, 1)-kite and the theta graph Ѳ(l[m] ), for m even.