نتایج جستجو برای: cubic equations

تعداد نتایج: 270521  

Journal: :Journal of Mathematics Research 2022

In this paper, we will study a partial sum modulus distribution for specific natural number set using dynamically sliding window. Then construct cubic equation from and formula to calculate zero. go through some applications of Cubic the basic algebraic concepts explain numbers.
 
 First part in interduce sums numbers dynamic window as parameter explore distribution. As simpler way st...

2005
Dmitry E. Pelinovsky Jianke Yang J. Yang

Spectral stability of multihump vector solitons in the Hamiltonian system of coupled nonlinear Schrödinger (NLS) equations is investigated both analytically and numerically. Using the closure theorem for the negative index of the linearized Hamiltonian, we classify all possible bifurcations of unstable eigenvalues in the systems of coupled NLS equations with cubic and saturable nonlinearities. ...

Journal: :Transactions of the Royal Society of Edinburgh 1805

Journal: :Časopis pro pěstování matematiky a fysiky 1893

2002
Ken-ichi Maruno

Using Painlevé analysis, the Hirota multi-linear method and a direct ansatz technique, we study analytic solutions of the (1+1)-dimensional complex cubic and quintic Swift-Hohenberg equations. We consider both standard and generalized versions of these equations. We have found that a number of exact solutions exist to each of these equations, provided that the coefficients are constrained by ce...

2008
Edray Goins Florian Luca Alain Togbé

In this paper, we find all the solutions of the Diophantine equation x + 2 513 = y in nonnegative integers x, y, α, β, γ, n ≥ 3 with x and y coprime. In fact, for n = 3, 4, 6, 8, 12, we transform the above equation into several elliptic equations written in cubic or quartic models for which we determine all their {2, 5, 13}-integer points. For n ≥ 5, we apply a method that uses primitive diviso...

Journal: :journal of applied and computational mechanics 0
naeem faraz shanghai university, shanghai china hou lei shanghai university, shanghai china yasir khan hafr al batin saudia arabia

an attempt is made for the first time to solve the quadratic and cubic model of magneto hydrodynamic poiseuille flow of phan-thein-tanner (ptt). series solution of magneto hydrodynamic (mhd) flow is developed by using homotopy perturbation method (hpm). results are presented graphically and the effects of non-dimensional parameters on the flow field are analyzed. the results obtained reveals ma...

Journal: :CoRR 2011
Oleg I. Mokhov

The paper is devoted to complete proofs of theorems on consistency on cubic lattices for 3 × 3 determinants. The discrete nonlinear equations on Z defined by the condition that the determinants of all 3×3 matrices of values of the scalar field at the points of the lattice Z that form elementary 3 × 3 squares vanish are considered; some explicit concrete conditions of general position on initial...

Journal: :Math. Comput. 2008
Christian Lubich

We give an error analysis of Strang-type splitting integrators for nonlinear Schrödinger equations. For Schrödinger-Poisson equations with an H4-regular solution, a first-order error bound in the H1 norm is shown and used to derive a second-order error bound in the L2 norm. For the cubic Schrödinger equation with an H4-regular solution, first-order convergence in the H2 norm is used to obtain s...

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