Applications of PQ trees include creating a contig map from DNA fragments, testing a matrix for the consecutive ones property, recognizing interval graphs and determining whether a graph is planar.
One Tree Hill | One Tree Hill (TV series) | tree | Christmas tree | Herbert Beerbohm Tree | Porcupine Tree | The Joshua Tree | The Hanging Tree | Quebracho tree | Joshua Tree National Park | Under the Yum Yum Tree | Happy Tree Friends | Tree of Life | Tree of Knowledge | tree line | Tree | Oak Tree | tree of life | Tea Tree Plaza Interchange | Rockin' Around the Christmas Tree | Radial tree | Joshua Tree | The Tree | The Learning Tree | The Juniper Tree | The Casuarina Tree | Peepal Tree Press | Our Father Who Art in The Tree | Lost Monarch (tree) | Iris Tree |