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On the Projective Differential Geometry of Conjugate Nets
American Journal of Mathematics, 1931Es wird eine neue analytische Behandlungsweise eines (konjugierten) Kurvennetzes auf einer Fläche des dreidimensionalen projektiven Raumes angegeben, wobei auf die Symmetrie der Formeln in bezug auf die beiden Scharen von Netzkurven besonderes Gewicht gelegt wird.
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GEOMETRY OF DIFFERENTIAL EQUATIONS AND PROJECTIVE REPRESENTATIONS OF THE WITT ALGEBRA
International Journal of Modern Physics B, 1992We give explicit expressions for the singular vectors in highest weight representations of the Virasoro algebra using a precise definition of fusion.
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Projective differential geometry of curves and ruled surfaces
, 1908Josef Grünvald
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Projective Differential Geometry of Systems of Linear Partial Differential Equations
1971—In S n — over a field F which will generally be either the real or the complex one — consider a surface Φ defined as the locus of points x whose projective coordinates (x(0) x(1),..., x(n)) are functions of two parameters u and v. These functions will all be supposed continuous with derivatives of sufficiently high order.x u will denote the point ...
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On the Projective Differential Geometry of Plane Anharmonic Curves
S. W. Reaves
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