NDLI: Planar threefolds in space of four dimensions

Content Provider	Scilit
Author	Welchman, W. G.
Copyright Year	1933
Description	1. It is known that, in [3], a ruled surface of order n and genus p has in general a double curve of order ½ (n − 1) (n − 2) − p and genus ½ (n − 5) (n + 2p − 2) + 1, 2(n + 2p − 2) torsal generators, 2(n − 2)(n − 3) − 2(n − 6)p generators which touch the double curve, and triple points.
Related Links	https://www.cambridge.org/core/services/aop-cambridge-core/content/view/FD27C71028891F5913C6B7AD84D409A6/S0305004100011361a.pdf/div-class-title-planar-threefolds-in-space-of-four-dimensions-div.pdf
Ending Page	115
Page Count	13
Starting Page	103
ISSN	03050041
e-ISSN	14698064
DOI	10.1017/s0305004100011361
Journal	Mathematical Proceedings of the Cambridge Philosophical Society
Issue Number	1
Volume Number	29
Language	English
Publisher	Cambridge University Press (CUP)
Publisher Date	1933-01-01
Access Restriction	Open
Subject Keyword	Mathematical Proceedings of the Cambridge Philosophical Society Mathematical Physics Four Dimensions Planar Threefolds Ruled Surface Triple Points Torsal Generators
Content Type	Text
Resource Type	Article
Subject	Mathematics

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Planar threefolds in space of four dimensions