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On the internal approach to differential equations 3. Infinitesimal symmetries

  • Veronika Chrastinová EMAIL logo and Václav Tryhuk
Published/Copyright: December 30, 2016
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Abstract

The geometrical theory of partial differential equations in the absolute sense, without any additional structures, is developed. In particular the symmetries need not preserve the hierarchy of independent and dependent variables. The order of derivatives can be changed and the article is devoted to the higher-order infinitesimal symmetries which provide a simplifying “linear approximation” of general groups of higher-order symmetries. The classical Lie’s approach is appropriately adapted.


This paper was elaborated with the financial support of the European Union’s “Operational Programme Research and Development for Innovations”, No. CZ.1.05/2.1.00/03.0097, as an activity of the regional Centre AdMaS “Advanced Materials, Structures and Technologies”.



(Communicated by: Michal Fečkan)


References

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Received: 2014-3-4
Accepted: 2014-7-3
Published Online: 2016-12-30
Published in Print: 2016-12-1

© 2016 Mathematical Institute Slovak Academy of Sciences

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