Results 21 to 30 of about 2,955,080 (287)
On a characteristic initial value problem in Plasma physics [PDF]
, 2005 The relativistic Vlasov-Maxwell system of plasma physics is considered with initial data on a past light cone. This characteristic initial value problem arises in a natural way as a mathematical framework to study the existence of solutions isolated from
Calogero, Simone
core +4 more sources
Characteristics of Complex Problems
, 2021 Many of the social challenges we care about feel like messy, wicked knots (or a pile of tangled headphones). When we pull on a thread in one place, we create new, tighter knots elsewhere. The messy nature of these challenges is due to, among other things, their complexity.
Farrell, Allie +4 more
openaire +2 more sources
A quadratic Poisson Gel'fand-Kirillov problem in prime characteristic [PDF]
, 2015 The quadratic Poisson Gel’fand-Kirillov problem asks whether the field of fractions of a Poisson algebra is Poisson birationally equivalent to a Poisson affine space, i.e. to a polyno-mial algebra K[X1,..., Xn] with Poisson bracket defined by {Xi, Xj} =
Launois, Stephane, Lecoutre, Cesar
core +2 more sources
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012 In the paper we consider the well-posed characteristic problem for the general hyperbolic differential equation of the third order with nonmultiple characteristics. The solution of this problem is constructed in an explicit form. The illustrative example
Julia O Yakovleva
doaj +3 more sources
On a characteristic problem for a loaded hyperbolic equation
Қарағанды университетінің хабаршысы. Математика сериясы, 2019 The paper studies a loaded hyperbolic equation with one - dimensional wave equation in its main part. In the loaded components there are two points, which are distributed respectively along a pair of intersecting characteristics at a constant speed. For
A.Kh. Attaev
doaj +1 more source
On Lars H\"ormander's remark on the characteristic Cauchy problem [PDF]
, 2005 We extend the results of a work by L. H\"ormander in 1990 concerning the resolution of the characteristic Cauchy problem for second order wave equations with regular first order potentials.
Nicolas, Jean-Philippe
core +7 more sources
The Boundary Value Problem of the Equations with Nonnegative Characteristic Form
Boundary Value Problems, 2010 We study the generalized Keldys-Fichera boundary value problem for a class of higher order equations with nonnegative characteristic. By using the acute angle principle and the Hölder inequalities and Young inequalities we discuss the existence of ...
Li Limei, Ma Tian
doaj +2 more sources
A study on the matching problem of engine, propeller, and ship hull under actual service conditions
International Journal of Naval Architecture and Ocean Engineering, 2023 In ship design, the matching of engine, propeller, and hull is an analytical process to establish the optimal operating mode so that the engine works safely with full power and the lowest fuel consumption, and a ship reaches desired speed. In theory, the
Thai Gia Tran, Hyun Cheol Kim
doaj +1 more source
Combined Field Integral Equation Based Theory of Characteristic Mode [PDF]
, 2015 Conventional electric field integral equation based theory is susceptible to the spurious internal resonance problem when the characteristic modes of closed perfectly conducting objects are computed iteratively. In this paper, we present a combined field
Chew, Weng Cho +3 more
core +2 more sources
Caraka Tani: Journal of Sustainable Agriculture, 2018 High poverty level because of coastal area community characteristic include low of social-economic living,minimum access to environment resources, and economic problems. Such as Torosiaje coastal area community in Pohuwato regency, where used as research
Erlyna Wida Riptanti
doaj +1 more source