AUTHORS: Jacob Manale
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ABSTRACT: We determine the group invariant solutions of the nonlinear heat equation though the linear case, using a relation that exists between the two. This is not new, but there has always been those solutions that proved difficult to evaluate through existing symmetry techniques, for both linear and nonlinear cases. We introduce what we call modified Lie symmetries to address these difficulties
KEYWORDS: Group method; Heat diffusion; Nonlinear problems; Modified symmetries
REFERENCES:
[1]. Lie, S.: Uber die Integration durch bestimmte Integrale von einer Klasse linearer partieller Differentialgleichungen, Arch. Math. 6, 328--368 (1881)
[2]. Bluman, G.W., Kumei, S.: Symmetries and Differential Equations. Applied Mathematical Sciences 81. Springer-Verlag. New York (1974)
[3]. Olver, P.J.: Equivalence, Invariants and Symmetry. Cambridge University Press. New York (1995)
[4]. Bluman, G.W., Cole, J.D.: The general similarity solution of the heat equation. J. Math. Mech. 18, 1025—1042 (1969)
[5]. Lie, S.: On integration of a class of linear partial differential equations by means of definite integrals. Arch. Math. 3, 328—368 (1881)
[6]. Ovsiannikov, L.V.: Group properties of nonlinear heat equation. Dokl. AN SSSR, 125(3), 492--495 (1959)
[7]. Akhatov, R., Gazizov, I. Ibragimov, N.I.: Group classification of equation of nonlinear filtration. Dokl. AN SSSR, 293, 1033—1035 (1987)
[8]. Ibragimov, N.I.: Selected works: MSc and Phd theses nonlocal symmetries approximate symmetries preliminary group classication Lie group analysis - a microscope of mathematical modelling. Grad. Texts in Math. II (2006)
[9]. Torrisi, M., Ibragimov, N.H., Valenti, A.: Preliminary group classification of equations 𝑣𝑣𝑡𝑡𝑡𝑡 = 𝑓𝑓(𝑥𝑥, 𝑣𝑣𝑥𝑥 )𝑣𝑣𝑥𝑥𝑥𝑥 + 𝑔𝑔(𝑥𝑥, 𝑣𝑣𝑥𝑥 ) J. Math. Phys. 32, 2988—2995 (1991)
[10]. Govinder, K.S., Edelstein, R.M.: On a preliminary group classification of the nonlinear heat conduction equation. Quaest. Math., 31, 225—240 (2008)
[11]. Abd-el-malek, M., Helal, M.M.: Group method solution for solving nonlinear heat diffusion problems. Appl. Math. Mod. 30(9), 930—940 (2006)
[12]. Gholinia, M., Gholinia, S., Akbari, N., Ganji, D.D.: Analytical and numerical study to nonlinear heat transfer equation in strait fin. Innovative Energy and Research. 5(2), 1—6 (2016) 13]. Manale, J.M.: Introducing smart symmetries with application to gravity related radiation. Int. J. Math. and Com. 1, 40—47 (2016)
[14]. Manale, J.M.: On a Financial Engineering Formula for European Options, Int. J. Appl. Eng. Res., 11, 7758--7766 (2016)
[15]. Manale, J.M.: Group analysis of differential equations: A new type of Lie symmetries, Int. J. Appl. Eng. Res., 13, 12029-12039 (2018)