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Erlang was born at Lonborg (Lønborg), near Tarm , in Jutland. He was the son of a schoolmaster and with his maternal mathematical ancestor Thomas Fincke, he demonstrated his potential from an early age by being able to read books upside down. He passed the Preliminary Examination offered by the University of Copenhagen, with distinction, at age 14, after receiving dispensation to sit because he was younger than the usual minimum age.
For the next two years he taught alongside his father.
With a distant relative providing free board and lodgings, he prepared for and sat the University of Copenhagen entrance examination in 1896, which he passed with distinction. He won a scholarship to the University of Copenhagen and majored in mathematics, but also studied astronomyAstronomy which etymologically means " law of the stars," (from Greek: + nomos) is a science involving the observation and explanation of events occurring outside Earth and its atmosphere. It studies the origins, evolution, physical and chemical propertie, physicsPhysics (from the Greek, physikos , "natural", and physis , "Nature") is the science of Nature in the broadest sense. Physicists study the behavior and properties of matter in a wide variety of contexts, ranging from the sub-microscopic particles from whi and chemistryChemistry is the science of matter and its interactions with energy (see physics, biology). Because of the diversity of matter (which is mostly atomic), Chemists are often engaged in the pursuit of studying how atoms interact to form molecules, and how mo. He graduated in 1901Events January 1 World celebrates what is regarded as the start of the new century. Zero-ists' argument that new century should be celebrated in 1900 rejected worldwide). January 1 The six colonies that make up Australia are federated as under an act of t with an MA and subsequently taught at several schools over the next 7 years. He maintained his interest in mathematics and received an award for one paper that he submitted to the University of Copenhagen.
He was a member of the Danish Mathematicians' Association and through this met amateur mathematician Johan Jensen , the Chief Engineer of the Copenhagen Telephone Company , an offshoot of the International Bell Telephone Company . Erlang subsequently obtained employment with the company in 19081908 is a leap year starting on Wednesday (link will take you to calendar). Events January-February January 1 A ball signifying New Year's Day drops in New York City's Times Square for the first time January 8 A train collision occurs in the Park Avenue T. He worked for the Copenhagen Telephone Company for almost 20 years, until his death in Copenhagen after an abdominal operation.
It was while working for the Copenhagen Telephone Company that Erlang was presented with the classic problem of determining how many circuits were needed to provide an acceptable telephone service. However, his thinking went further in that he also realised that mathematics could be applied to assess how many operators were needed to handle a given volume of telephone calls. At that time most telephone exchanges used human operators and cord boards to switch telephone calls by means of jack plugs.
Out of necessity, Erlang was a hands-on researcher. He would conduct his own measurements and was prepared to climb into street manholes to do so.
Erlang was also an expert in both the history and calculation of the numerical tables of mathematical functions, particularly logarithmIn mathematics, the logarithm functions are the inverses of the exponential functions. Logarithms are numbers that are substituted in computation for other numbers, to which they bear such a relation that the operations to be performed on the latter are rs. He devised new calculation methods for certain forms of mathematical tables.
He developed his theory concerning telephone traffic over several years. His significant publications include:
These and other notable papers were translated into English, French and German. His papers were prepared in a very brief style and can be difficult to understand without a background in the field. So that his papers could be studied in the original Danish, one researcher from Bell Telephone Laboratories learnt the language.
The British Post Office accepted his formula as the basis for calculating circuit facilities.
He was an associate of the British Institution of Electrical Engineers.
The unit of communication activity in these fields is now known as the erlang, in recognition of his achievements.
Ericsson has also named the Erlang programming language, a programming language for large industrial real-time systems, in his honour.His name is also given to the statistical probability distribution that arises from his work.
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