Transportation in the Philippines it has the largest number of international flights to the Philippines as well as domestic flights. The Philippine Airlines links Manila to 48 cities in 4 continents, and flies regularly to 41 domestic destinations outside Manila. Philippine Airlines also serves twenty destinations in the Philippines and 32 destinations which are all located in Southeast Asia, South Asia, East Asia, Oceania and North America. Cebu Pacific is the low fare leader in the country, and is the country's leading domestic airline. It links Manila to 21 different domestic destinations in Philippines and to 39 international destinations with its direct flights. After
Lie theory Lie theory In mathematics, the researcher Sophus Lie ( ) initiated lines of study involving integration of differential equations, transformation groups, and contact of spheres that have come to be called Lie theory. For instance, the latter subject is Lie sphere geometry. This article addresses his approach to transformation groups, which is one of the areas of mathematics, and was worked out by Wilhelm Killing and Élie Cartan. The foundation of Lie theory is the exponential map relating Lie algebras to Lie groups which is called the Lie group–Lie algebra correspondence. The subject is part of differential geometry since Lie