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zbMATH Open0632.53012MaRDI QIDQ3769538

Maks A. Akivis

Publication date: 1987

Title of this publication is not available (Why is that?)

zbMATH Keywords

constant curvature null-index second fundamental tensors k-parabolic surface projective structue tangentially degenerate surface

Mathematics Subject Classification ID

Non-Euclidean differential geometry (53A35) Projective differential geometry (53A20)

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