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Georg Stamou 《manuscripta mathematica》1980,32(1-2):81-90
In this note we consider a pseudospherical congruence S in an isotropic space of degree one J
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and we study a special congruence S which is derived from S. 相似文献
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Nicolas Lusin 《Rendiconti del Circolo Matematico di Palermo》1911,32(1):386-390
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Prof. Dr. M. Schneider 《Monatshefte für Mathematik》1976,82(4):317-326
To prove the unicity of the classical solution and the existence of a weak solution for differential equations of mixed type in 3, a general method to obtain a-priori estimates is given, and the adjoint boundary conditions for a class of boundary problems are determined. The results obtained are used to prove the unicity and the existence of a weak solution for a special problem given byG. D. Karatoprakliev in [4]. 相似文献
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Leopold Gegenbauer 《Monatshefte für Mathematik》1892,3(1):336-336
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