(noun) Fast growing function based on Kruskal's tree theorem.
"He fell as gently as a tree falls. There was not even any sound."
"A man without principle is like a tree without leaves."
"If people in general could be got into the woods, even for once, to hear the trees speak for themselves, all difficulties in the way of forest preservation would vanish."
"From a withered tree, a flower blooms."
"I will not say that your mulberry trees are dead; but I am afraid they're not alive."
"We all travel the Milky Way together, trees and men."
"Moments like this are buds on the tree of life. Flowers of darkness they are."
"I speak for the trees, for the trees have no tongues."
"And all the lives we ever lived and all the lives to be are full of trees and changing leaves."
"I never saw a discontented tree."
"In the beauty and grandeur of individual trees, and in number and variety of species, the Sierra forests surpass all others."
"God has cared for these trees, saved them from drought, disease, avalanches, and a thousand tempests and floods. But he cannot save them from fool."