In this article we characterize inverse M-matrices and potentials whose inverses are supported on trees. In the symmetric case we show they are a Hadamard product of tree ultrametric matrices, generalizing a result by ...

A photo of a heavily laden Cannon ball tree with its fallen fruits lying around the tree trunk.

A Samaan tree located in a public park.

Suffix trees are one of the most versatile data structures in stringology, with many applications in bioinformatics. Their main drawback is their size, which can be tens of times larger than the input sequence. Much effort ...

Chordal graphs have characteristic tree representations, the clique trees. The problems of finding one or enumerating them have already been solved in a satisfactory way. In this paper, the following related problem is ...

Forest management could potentially affect organisms in all forest habitats. However, aquatic communities in water-filled tree-holes may be especially sensitive because of small population sizes, the risk of drought and ...

The Cannon ball tree is indigenous to South America and the South Caribbean. Its scientifc name is Couroupita guianensis. The tree produces a pink aromatic flower and bears large globose woody fruits which look like big ...

The title of the postcard is incorrect, the tree in the picture is a Ficus benjamina (Benjamin Tree or Weeping fig).

The title of the postcard is incorrect, the tree in the picture is a Ficus benjamina (Benjamin Tree or Weeping fig).

Disruptions in species interactions derived from forest fragmentation are a major driver of biodiversity declines. Atmospheric bromeliads, a group of extreme epiphytes in the Tillandsia genus, often thrive in anthropogenic ...