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Plumbing (mathematics) Plumbing two 1-disk bundles to get a new 2-manifold. In the mathematical field of geometric topology, among the techniques known as surgery theory, the process of plumbing is a way to create new manifolds out of disk bundles. It was first described by John Milnor [1] and subsequently used extensively in surgery theory to ...
Fixture unit. In plumbing, a Fixture Unit ( FU) or Drain Fixture Unit ( DFU) is "a unit of measure, based on the rate of discharge, time of operation and frequency of use of a fixture, that expresses the hydraulic load imposed by that fixture on the sanitary plumbing installation". [1] A Fixture Unit is not a flow rate unit but a design factor ...
Uniform Plumbing Code. Designated as an American National Standard, the Uniform Plumbing Code ( UPC) is a model code developed by the International Association of Plumbing and Mechanical Officials ( IAPMO) to govern the installation and inspection of plumbing systems as a means of promoting the public's health, safety and welfare.
Plumbing – the Maya have been found to be the earliest inventors of plumbing in Mesoamerica, with the earliest example of a pressurized water system being constructed in 750 CE—or earlier. This pressurized water system was located in the Maya site of Palenque , where public baths and toilets were accessible to the residents of the ancient city.
For example, a conventional heat pump system used to heat a building in Montana's −57 °C (−70 °F) low temperature or cool a building in the highest temperature ever recorded in the US—57 °C (134 °F) in Death Valley, California, in 1913 would require a large amount of energy due to the extreme difference between inside and outside air ...
The classical objects of interest in arithmetic geometry are rational points: sets of solutions of a system of polynomial equations over number fields, finite fields, p-adic fields, or function fields, i.e. fields that are not algebraically closed excluding the real numbers.
Marian P. Roque is a Filipina mathematician. She was the president of the Mathematical Society of the Philippines, [1] a professor in the Institute of Mathematics of the University of the Philippines Diliman, [2] and former Director of the Institute of Mathematics. [3] Her mathematical specialty is the theory of partial differential equations.
The 1889 treatise Arithmetices principia, nova methodo exposita ( The principles of arithmetic, presented by a new method) by Giuseppe Peano is widely considered to be a seminal document in mathematical logic and set theory, [1] [2] introducing what is now the standard axiomatization of the natural numbers, and known as the Peano axioms, as ...