A polygonal number is a type of figurate number that is a generalization of triangular, square, etc., to an-gon for an arbitrary positive integer. The above diagrams graphically illustrate the process by which the polygonal numbers are built up. Starting with the th triangular number, then.
PURPOSE: Divergence insufficiency is an unusual form of strabismus with esotropia and diplopia only at distance and single binocular vision at near.This retrospective case series describes the diagnosis and treatment of 7 patients and differentiates this clinical entity from other conditions.ONCLUSIONS: Divergence insufficiency is a distinct clinical entity in otherwise healthy patients, which can be successfully treated by unilateral or bilateral medial rectus recession. [PubMed-indexed for MEDLINE].
Also called (for senses 1, 2): divergency or divergement. (dÉªËvÉr dÊÉns, daÉª-) n. 1. an act or instance of diverging. 2. a divergent state or quality. 3. the degree or point of diverging. 4. a difference of structure in related organisms caused by different environmental pressures. 5. the net flow of air from a given region.