I was just pointing out the statement
"...only a very restricted classes of *trees* have been shown to be graceful. *These* restricted classes include...the complete bipartite graph".
doesn't make sense.
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CSI of Charles University
no duh..
I was just pointing out the statement
"...only a very restricted classes of *trees* have been shown to be graceful. *These* restricted classes include...the complete bipartite graph".
doesn't make sense.