Projective line (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Projective line" in English language version.

refsWebsite

Global rank English rank

1mathoverflow.net

low place

low place

1books.google.com

3^rd place

3^rd place

books.google.com

Harris, Joe (1992), Algebraic Geometry: A First Course, Graduate Texts in Mathematics, vol. 133, Springer, ISBN 9780387977164.

mathoverflow.net

Action of PGL(2) on Projective Space – see comment and cited paper.