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A rocket's required mass ratio as a function of effective exhaust velocity ratio. The classical rocket equation, or ideal rocket equation is a mathematical equation that describes the motion of vehicles that follow the basic principle of a rocket: a device that can apply acceleration to itself using thrust by expelling part of its mass with high velocity and can thereby move due to the ...
Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.
The s-step Adams–Bashforth method has order s, while the s-step Adams–Moulton method has order + (Hairer, Nørsett & Wanner 1993, §III.2). These conditions are often formulated using the characteristic polynomials ρ ( z ) = z s + ∑ k = 0 s − 1 a k z k and σ ( z ) = ∑ k = 0 s b k z k . {\displaystyle \rho (z)=z^{s}+\sum _{k=0}^{s-1 ...
Sofia Kovalevskaya, first woman professor in Northern Europe and Russia, the first female professor of mathematics, discovered the Kovalevskaya top; Mikhail Kravchuk, developed the Kravchuk polynomials and Kravchuk matrix; Mark Krein, developed the Tannaka–Krein duality, Krein–Milman theorem and Krein space, Wolf Prize winner
Russia claims the radar can detect targets the size of a "football ball" at a distance of 8000 km. [2] Voronezh-VP (77Ya6-VP) works in the meter range and was designed by RTI Mints. The only one built has 6 segments instead of the 3 of the Voronezh-M. [9] A Voronezh-M is claimed to cost 2.85 billion rubles and a Voronezh-DM 4.3 billion rubles. [10]
Skewed, or oblique sazhen' (косая сажень, kosaya sazhen', distance between tip of a raised arm and a tip of an opposite leg slightly put away) = 2.48 m / 2.4892 m to be exact, since 1 Kosaya Sazhen is equal to 3.5 Arshins which is equal to 98 inches
Although lectures in mathematics had been delivered since Moscow State University was founded in 1755, the mathematical and physical department was founded only in 1804. . The Mathematics and Mechanics Department was founded on 1 May 1933 and comprised mathematics, mechanics and astronomy departments (the latter passed to the Physics Department in 1
Arnold (left) and Russia's president Dmitry Medvedev. Lenin Prize (1965, with Andrey Kolmogorov), [58] "for work on celestial mechanics." Crafoord Prize (1982, with Louis Nirenberg), [59] "for their outstanding achievements in the theory of non-linear differential equations." [60] Elected member of the United States National Academy of Sciences ...