title: A relation between the right triangle and circular tori with constant mean curvature in the unit 3-sphere.
abstract: In this note we will show that the inverse image under the stereographic projection of a circular torus of revolution in the 3-dimensional euclidean space has constant mean curvature in the unit 3-sphere if and only if their radii are the catet and the hypotenuse of an appropriate right triangle.
authors.affiliation: Departamento de Matemática, UFC, B1 914, Campus do Pici, 60455-760 Fortaleza, CE, Brazil. abbarros@mat.ufc.br
authors.forename: Abdênago
authors.initials: A
authors.lastname: Barros