Abstract
It was recently shown that just five characters (functions on a finite set X) suffice to convexly define a trivalent tree with leaf set X. Here we show that four characters suffice which, since three characters are not enough in general, is the best possible.
| Original language | English |
|---|---|
| Pages (from-to) | 835-843 |
| Number of pages | 9 |
| Journal | SIAM Journal on Discrete Mathematics |
| Volume | 18 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2005 |