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Investigation of the asymptotic properties of solutions of the wave equation at singular points of the potential

✍ Scribed by N.I. Zhirnov


Publisher
Elsevier Science
Year
1968
Weight
258 KB
Volume
8
Category
Article
ISSN
0041-5553

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In 1981, L. A. Rubel found an explicit algebraic differential equation (ADE) of order four such that every real continuous function on the real line can be uniformly approximated by the C ∞ -solutions of this ADE. It is shown that an ADE of order five exists, where the C ∞ -solutions additionally sa