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Note on Projective Coordinates

✍ Scribed by H. P. Robertson


Book ID
123667082
Publisher
National Academy of Sciences
Year
1928
Tongue
English
Weight
109 KB
Volume
14
Category
Article
ISSN
0027-8424

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## Abstract We show that all graphs with a simple extension property are projective. As a consequence of this result we settle in the affirmative a conjecture of Larose and Tardif and characterize all homogeneous graphs which are projective. Β© 2004 Wiley Periodicals, Inc. J Graph Theory 47: 81–86,

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The singularities along the polar axis induced by the spherical coordinates can be circumvented with the use of the projective coordinates, replacing besides cumbersome trigonometric manipulations by elementary algebraic operations of vectorial nature. New formulas in projective coordinates for the