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In mathematics, the infinite series 1 / 2 + 1 / 4 + 1 / 8 + 1 / 16 + ··· is an elementary example of a geometric series that converges absolutely. The sum of the series is 1.
The first four partial sums of 1 + 2 + 4 + 8 + ⋯. In mathematics, 1 + 2 + 4 + 8 + ⋯ is the infinite series whose terms are the successive powers of two. As a geometric series, it is characterized by its first term, 1, and its common ratio, 2. As a series of real numbers it diverges to infinity, so the sum of this series is infinity.
It is to be regretted that this first comprehensive and thorough-going presentation of a mathematical logic and the derivation of mathematics from it [is] so greatly lacking in formal precision in the foundations (contained in 1– 21 of Principia [i.e., sections 1– 5 (propositional logic), 8–14 (predicate logic with identity/equality), 20 ...
Octal (base 8) is a numeral system with eight as the base.. In the decimal system, each place is a power of ten.For example: = + In the octal system, each place is a power of eight.
888 is the 42nd longest side of a Heronian tetrahedron, [9] whose edge lengths, face areas and volumes are all integers; more specifically it is the second-largest longest side of a primitive Heronian tetrahedron (after 203, and preceding 1804) [a] with four congruent triangle faces (this primitive Heronian tetrahedron is a tetrahedron where four edges share no common factor).
8½ (Italian: Otto e mezzo [ˈɔtto e mˈmɛddzo]) is a 1963 comedy drama film co-written and directed by Federico Fellini.The metafictional narrative centers on Guido Anselmi (Marcello Mastroianni), a famous Italian film director who suffers from stifled creativity as he attempts to direct an epic science fiction film.
The 2-8-2 saw great success in the United States, mostly as a freight locomotive. In the 1910s it largely replaced the 2-8-0 Consolidation as the main heavy freight locomotive type. Its tractive effort was similar to that of the best 2-8-0s, but a developing requirement for higher speed freight trains drove the shift to the 2-8-2 wheel arrangement.
Canadian National Railway (CN) Class S locomotives were a Class of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′ in UIC classification. These locomotives were designed for 16° operating curvature. The first examples of this very successful class were built for the Grand Trunk Railway in 1913. Major purchases of the class ...