Abstract

A symmetry problem is solved. A new method is used. The idea of this methodis to reduce to a contradiction the PDE and the over-determined boundary data on the boundary.The new method allows one to solve other symmetry problems.

Highlights

  • Symmetry problems for PDE were studied in many publications by many authors, see, for example, [1]

  • R3, S is the boundary of D, N is the unit normal to S, pointing out of D, uN is the normal derivative of u on S, D = R3 \ D, S2 is the unit sphere in R3, Jn(r) is the Bessel function regular at r

  • Let us formulate the symmetry problem studied in this paper

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Summary

Introduction

Symmetry problems for PDE were studied in many publications by many authors, see, for example, [1]. In this paper a new method is given for a study of symmetry problems for PDE. R3, S is the boundary of D, N is the unit normal to S, pointing out of D, uN is the normal derivative of u on S, D = R3 \ D, S2 is the unit sphere in R3, Jn(r) is the Bessel function regular at r

Results
Conclusion

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