Mexicana de Aviación Mexicana de Aviación Compañía Mexicana de Aviación, S.A. de C.V. (commonly known as Mexicana) was Mexico's oldest airline and one of the oldest continuously single-branded airlines (after KLM, Avianca and QANTAS), and Mexico's biggest and flagship airline before ceasing operations on August 28, 2010. The group's closure was announced by the company's recently installed management team a short time after the group filed for Concurso Mercantil (Mexican law equivalent to US Chapter 11) and US Chapter 15. On April 4, 2014, a judge declared Mexicana bankrupt and ordered to start selling off the company's assets to repay the airline's obligations.
Continuous function makes "f" continuous. If "f" is surjective, this topology is canonically identified with the quotient topology under the equivalence relation defined by "f". Dually, for a function "f" from a set "S" to a topological space "X", the initial topology on "S" is defined by designating as an open set every subset "A" of "S" such that formula_112 for some open subset "U" of "X". If "S" has an existing topology, "f" is continuous with respect to this topology if and only if the existing topology is finer than the initial topology on "S". Thus the initial topology can be