On vacuum points and the possibility of
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J.W. Reyn
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Article
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1970
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Elsevier Science
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Solutions of Chaplygin's eq uat ion with y =3 for the initial value problem with analytic initial data on the vacuum line are used a s a basis for a classification of vacuum points. Three typos of vacuum points are distinguished: (i) points of the gen eration type, (ii) p oints of the r eflection ty