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The designation E 7 comes from the Cartan–Killing classification of the complex simple Lie algebras, which fall into four infinite series labeled A n, B n, C n, D n, and five exceptional cases labeled E 6, E 7, E 8, F 4, and G 2. The E 7 algebra is thus one of the five exceptional cases.
Summa de arithmetica, geometria, proportioni et proportionalita (Summary of arithmetic, geometry, proportions and proportionality) is a book on mathematics written by Luca Pacioli and first published in 1494.
Substituting r(cos θ + i sin θ) for e ix and equating real and imaginary parts in this formula gives dr / dx = 0 and dθ / dx = 1. Thus, r is a constant, and θ is x + C for some constant C. The initial values r(0) = 1 and θ(0) = 0 come from e 0i = 1, giving r = 1 and θ = x.
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South Africa beat Sri Lanka by 109 runs on the last morning of the second cricket test at St George's Park and swept the series 2-0 on Monday. The odds favored South Africa, which needed five more ...
A new report has identified several factors that can strongly predict at age 60 if people will develop dementia by 80, including having diabetes, not exercising, having a stroke, and not engaging ...
Hundreds of migrants waited in long lines outside an immigration office in southern Mexico on Monday, hoping to secure safe passage north and enter the U.S. legally before President-elect Donald ...