As Urs knows, topology – references has now been created.

]]>best would be to create a separate entry *topology – references* with the bare references-section and then `!include`

it into these entries (also maybe at *general topology*). This way all updates to the list automatically get synced to all these entries

I did think it peculiar that where references should be in topological space, it simply said “see another article”. Another option might be just to copy appropriate bibliographic entries from topology and paste them at topological space.

]]>the historical references here were unconnected to the text that goes with them, which was sitting in another entry, elsewhere. I have linked the latter back to here and inserted the pertinent comments right before the respective reference items (here)

]]>merged the Bourbaki-item with the English translation

]]>Added a bibliographic reference to the first Bourbaki text (1940).

]]>Added Kuratowski 1922 reference.

]]>Added reference

- Felix Hausdorff
*Grundzüge der Mengenlehre*, Leipzig: Veit (1914). ISBN 978-0-8284-0061-9 Reprinted by Chelsea Publishing Company in 1944, 1949 and 1965

rearranged thw wording in this bibitem, for clarity, and added the doi-link:

- Nicolas Bourbaki,
*Topological Structures*, Chapter 1 in:*General topology*, Elements of Mathematics III, Springer (1971, 1990, 1995) [doi:10.1007/978-3-642-61701-0]

added to the list of textbook accounts:

- Klaus Jänich,
*Topology*, Undergraduate Texts in Mathematics, Springer (1984) [ISBN:9780387908922, Chapters 1-2: pdf]

and

- Anatole Katok, Alexey Sossinsky,
*Introduction to Modern Topology and Geometry*(2010) [toc pdf]

added this quote, for fun:

I believe that we lack another analysis properly geometric or linear which expresses location directly as algebra expresses magnitude.

which Bredon 93, p. 430 says is due to Leibniz in a letter to Huygens 1679

Not sure what a real source reference would be. Googling for the full quote gives another topoloy textbook that also quotes it this way, but also without further reference details

]]>there was a broken pointer to “basic problems of algebraic topology” which I am removing hereby.

(It may be interesting to have such a page, and then we can still add a link, but it is pointless to have a broken link to a non-existent such page.)

]]>added pointer to:

- Tai-Danae Bradley, Tyler Bryson, John Terilla,
*Topology – A categorical approach*, MIT Press 2020 (ISBN:9780262539357, web version)

fix the interval (-1,1) wrongly written as (0,1) in the example of homeomorphism

Monothink

]]>added pointer to

- Michael Müger,
*Topology for the working mathematician*, Nijmegen 2018 (pdf)