Talk:Pencil (geometry)

Untitled
It would be great to have a page on hyperbolic pencils. The reference I've been reading, which seems to do a good job, is Chapter 7 of Alan Beardon's "Geometry of Discrete Groups". Amazelgee (talk) 21:30, 15 July 2008 (UTC)

Link [1] is broken. Regards! — Preceding unsigned comment added by 81.37.109.54 (talk) 08:24, 24 April 2015 (UTC)

Assessment comment
Substituted at 02:27, 5 May 2016 (UTC)

Bundle of lines
The article cites J.W. Young on one-dimensional primitive forms. The assertion is that a pencil of lines lies in a plane and that the 3D pencil is a bundle. This assertion appears peculiar to Young. In fact, the article geometric primitive does not align with Young's primitive forms. The assertion that a bundle is determined by any three elements is false for a line bundle when the three lines lie in a plane. It is suggested that the article be edited to remove the peculiar notion due to Young. Rgdboer (talk) 21:14, 22 June 2023 (UTC)