San Francisco Health Care Security Ordinance & its intersection with the Health Care Accountability Ordinance Joannie C. Chang Office of Labor Standards Enforcement City & County of San Francisco January 2009.
In geometry, a torus (plural tori) is a surface of revolution generated by revolving a circle in three-dimensional space about an axis coplanar with the circle.he flat torus is a torus with the metric inherited from its representation as the quotient, R 2 / L, where L is a discrete subgroup of R 2 isomorphic to Z 2. This gives the quotient the structure of a Riemannian manifold.
callus. n, pl-luses. 1. (Pathology) Also called: callosity an area of skin that is hard or thick, esp on the palm of the hand or sole of the foot, as from continual friction or pressure. 2. (Pathology) an area of bony tissue formed during the healing of a fractured bone.