Talk:Non-Euclidean geometry
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Diagram with hyperbolic
[edit]That diagram is only true for Poincare hyberolic disc lines, not other kind of hyperbolic geometries like the Klien model.
Absolute Geometry
[edit]Absolute geometry does not take a position on Euclid's fifth postulate, the rule of Euclidean geometry that states that parrallel lines go on to infinity and never intersect. So it is wrong to refer to absolute geometry as a non-Euclidean geometry because it is compatible with both Euclidean and non-Euclidean geometry and the first 28 Euclidean theorems don't involve parralell lines so they could be considered absolute geometry so absolute geometry is really not neccessarilly a non-Euclidean geometry and should not be referred to as such in this article. NikolaiLobachevsky 6:03:14 1/4/2007 (UTC)
long url in article body pointing to edit
[edit]This is in the article body, it seemed a little wierd (not the content itself, the big/edit url in the text):
Another practical model of hyperbolic space was developed by Dr. Diana Taimina in 1997 using crochet (please see http://en.wikipedia.org/w/index.php?title=Non-Euclidean_geometry&action=edit§ion=5 for more information).
Lovecraft
[edit]The current version of the article says, regarding The Call of Cthulhu, "It is heavily implied this is achieved as a side effect of not following the natural laws of this universe rather than simply using an alternate geometric model, as the sheer innate wrongness of it is said to be capable of driving those who look upon it insane.[35]" and [35] is The Call of Cthulhu. Which is false, what Lovecraft described *was* an alternate geometric model (gravity/perspective working differently, angles looking differently depending on the point of view, that it was easy to get lost), and he did not claim that "innate wrongness is capable to drive insane". See the article "H. P. Lovecraft and non-Euclidean geometry". 178.42.226.17 (talk) 22:09, 10 April 2023 (UTC)
Solenoid, by Mircea Cărtărescu
[edit]Solenoid, by Mircea Cărtărescu (published in Romanian in 2015, translated into English in 2022) deals, in part, with non-Euclidean geometry. So it kʊd be added to your Fiction section. ~2026-30213-86 (talk) 00:21, 20 May 2026 (UTC)