Funkcialaj Ekvacioj
Print ISSN : 0532-8721
Scaling Limit of Successive Approximations for w′ = –w2
Tetsuya HattoriHiroyuki Ochiai
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2006 Volume 49 Issue 2 Pages 291-319

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Abstract
We prove existence of scaling limits of sequences of functions defined by the recursion relation wn+1(x) = –wn(x)2. which is a successive approximation to w′(x) = –w(x)2, a simplest non-linear ordinary differential equation whose solutions have moving singularities. Namely, the sequence approaches the exact solution as n → ∞ in an asymptotically conformal way, wn(x) $\\asymp$ qn $\\bar w$(qnx), for a sequence of numbers {qn} and a function $\\bar w$. We also discuss implication of the results in terms of random sequential bisections of a rod.
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© 2006 by the Division of Functional Equations, The Mathematical Society of Japan
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