scholarly journals ODD GRACEFUL LABELING OF PATH UNION OF CATERPILLARS

2021 ◽  
Vol 28 (2) ◽  
pp. 287-294
Author(s):  
J. Jeba Jesintha
Keyword(s):  
Author(s):  
M. A. Perumal ◽  
S. Navaneethakrishnan ◽  
A. Nagaraja ◽  
S. Arockiaraj

2018 ◽  
Vol 9 (12) ◽  
pp. 2147-2152
Author(s):  
V. Raju ◽  
M. Paruvatha vathana

2020 ◽  
Vol 9 (4) ◽  
pp. 1973-1981
Author(s):  
A. Kumar ◽  
V. Kumar ◽  
K. Kumar ◽  
P. Gupta ◽  
Y. Khandelwal
Keyword(s):  

2021 ◽  
Vol 1872 (1) ◽  
pp. 012007
Author(s):  
D Jayantara ◽  
Purwanto ◽  
S Irawati

2015 ◽  
Vol 9 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Tao-Ming Wang ◽  
Cheng-Chang Yang ◽  
Lih-Hsing Hsu ◽  
Eddie Cheng

A graceful labeling of a graph with q edges is a labeling of its vertices using the integers in [0, q], such that no two vertices are assigned the same label and each edge is uniquely identified by the absolute difference between the labels of its endpoints. The well known Graceful Tree Conjecture (GTC) states that all trees are graceful, and it remains open. It was proved in 1999 by Broersma and Hoede that there is an equivalent conjecture for GTC stating that all trees containing a perfect matching are strongly graceful (graceful with an extra condition). In this paper we extend the above result by showing that there exist infinitely many equivalent versions of the GTC. Moreover we verify these infinitely many equivalent conjectures of GTC for trees of diameter at most 7. Among others we are also able to identify new graceful trees and in particular generalize the ?-construction of Stanton-Zarnke (and later Koh- Rogers-Tan) for building graceful trees through two smaller given graceful trees.


Author(s):  
J. Jeba Jesintha ◽  
K. Subashini ◽  
Allu Merin Sabu
Keyword(s):  

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