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11: 29.19 Physical Applications
§29.19(ii) Lamé Polynomials
Ward (1987) computes finite-gap potentials associated with the periodic Korteweg–de Vries equation. …Hargrave (1978) studies high frequency solutions of the delta wing equation. …Roper (1951) solves the linearized supersonic flow equations. Clarkson (1991) solves nonlinear evolution equations. …
12: 32.13 Reductions of Partial Differential Equations
§32.13 Reductions of Partial Differential Equations
Equation (32.13.3) also has the similarity reduction …
§32.13(ii) Sine-Gordon Equation
§32.13(iii) Boussinesq Equation
13: 31.12 Confluent Forms of Heun’s Equation
Confluent Heun Equation
Doubly-Confluent Heun Equation
Biconfluent Heun Equation
Triconfluent Heun Equation
14: 29.11 Lamé Wave Equation
§29.11 Lamé Wave Equation
The Lamé (or ellipsoidal) wave equation is given by …In the case ω = 0 , (29.11.1) reduces to Lamé’s equation (29.2.1). …
15: 9.16 Physical Applications
A quite different application is made in the study of the diffraction of sound pulses by a circular cylinder (Friedlander (1958)). … In the study of the stability of a two-dimensional viscous fluid, the flow is governed by the Orr–Sommerfeld equation (a fourth-order differential equation). …An application of Airy functions to the solution of this equation is given in Gramtcheff (1981). Airy functions play a prominent role in problems defined by nonlinear wave equations. These first appeared in connection with the equation governing the evolution of long shallow water waves of permanent form, generally called solitons, and are predicted by the Korteweg–de Vries (KdV) equation (a third-order nonlinear partial differential equation). …
16: Sidebar 21.SB2: A two-phase solution of the Kadomtsev–Petviashvili equation (21.9.3)
Sidebar 21.SB2: A two-phase solution of the Kadomtsev–Petviashvili equation (21.9.3)
A two-phase solution of the Kadomtsev–Petviashvili equation (21.9.3). …
17: 32.12 Asymptotic Approximations for Complex Variables
§32.12(i) First Painlevé Equation
§32.12(ii) Second Painlevé Equation
§32.12(iii) Third Painlevé Equation
18: 28.17 Stability as x ±
§28.17 Stability as x ±
See accompanying text
Figure 28.17.1: Stability chart for eigenvalues of Mathieu’s equation (28.2.1). Magnify
19: 21.9 Integrable Equations
§21.9 Integrable Equations
Typical examples of such equations are the Korteweg--de Vries equation …and the nonlinear Schrödinger equations
20: Mark J. Ablowitz
Ablowitz is an applied mathematician who is interested in solutions of nonlinear wave equations. Certain nonlinear equations are special; e. …ODEs with the Painlevé property contain the well-known Painlevé equations which are special second order scalar equations; their solutions are often called Painlevé transcendents. Some of the relationships between IST and Painlevé equations are discussed in two books: Solitons and the Inverse Scattering Transform and Solitons, Nonlinear Evolution Equations and Inverse Scattering. Widespread interest in Painlevé equations re-emerged in the 1970s and thereafter partially due to the connection with IST and integrable systems. …