Talk:Busemann function

Query

Re "are quasi-equivalent to he identity and such that there are constants" he looks wrong to me, should it be the? Ϣere SpielChequers 02:53, 24 April 2019 (UTC)[reply]

thanks, corrected. this was badly formulated, i also added some precisions. jraimbau (talk) 11:37, 24 April 2019 (UTC)[reply]

Tone

This article reads like an advanced mathematics textbook. However, Wikipedia is an encyclopedia for a general audience, not a textbook. Please see Wikipedia:What_Wikipedia_is_not#Wikipedia_is_not_a_manual,_guidebook,_textbook,_or_scientific_journal. #6 and #8.

Ira

Ira Leviton (talk) 19:29, 26 July 2020 (UTC)[reply]

This is an incomplete article on Hadamard spaces and their compactications: Busemann functions are the main device for identifying the boundary (e.g. the Gromov boundary). If wikipedians complain and try to find any useful information on Hadamard spaces, the alternative are vague comments, mostly unreferenced at the level of sub-stub. On the other hand the lede could be better written, emphasising why they are used, and the sections on the unit disk could be completed. Many examples mathematical articles on wikipedia have similar problems. Mathsci (talk) 20:04, 26 July 2020 (UTC)[reply]

first poincare examplr

tried to improve the formulas at the first example still don't understand a lot if it would welcome further improvements 213.205.241.90 (talk) 12:28, 6 June 2021 (UTC)[reply]