olemus
hulk S koos
selles hulgas defineeritud sulundioperaatoriga c
=
a set S with the closure operator c defined on this set

ülevaateid
https://encyclopediaofmath.org/wiki/Closure_space

https://planetmath.org/closurespace

https://insa.nic.in/writereaddata/UpLoadedFiles/IJPAM/20005a7c_680.pdf

http://www.kurims.kyoto-u.ac.jp/~kyodo/kokyuroku/contents/pdf/1809-17.pdf

vt ka
- sulund