PMC:1624833 / 17453-17612 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/1624833","sourcedb":"PMC","sourceid":"1624833","source_url":"https://www.ncbi.nlm.nih.gov/pmc/1624833","text":"1. For each row i of M, 1 ≤ i ≤ n, construct a PQ tree Ti and insert the restriction corresponding to row i of M into Ti. Let T be the set of these n PQ trees.","tracks":[]}