The present paper shows the coordinates of a tree and its vertic es, defines a kind of Trees with Odd-Number Radiant Type (TONRT), deals with th e gracefulness of TONRT by using the edge-moving theorem, and uses gra...The present paper shows the coordinates of a tree and its vertic es, defines a kind of Trees with Odd-Number Radiant Type (TONRT), deals with th e gracefulness of TONRT by using the edge-moving theorem, and uses graceful TON RT to construct another class of graceful trees.展开更多
文摘The present paper shows the coordinates of a tree and its vertic es, defines a kind of Trees with Odd-Number Radiant Type (TONRT), deals with th e gracefulness of TONRT by using the edge-moving theorem, and uses graceful TON RT to construct another class of graceful trees.
