olemus
vektorruum, koos oma normiga
= a vector space over on which a norm is defined

piltlikult
https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Ftse2.mm.bing.net%2Fth%3Fid%3DOIP.Z_ke235RLKG6X69b5u2OwgAAAA%26pid%3DApi&f=1

ülevaateid
https://en.wikipedia.org/wiki/Normed_vector_space

https://wiki.math.ntnu.no/linearmethods/basicspaces/normedvectorspaces

https://www.uni-ulm.de/fileadmin/website_uni_ulm/mawi.inst.020/sauter/ws14/normed-spaces.2014-11-12.pdf

http://math.ucsd.edu/~aterras/ma142blecture1.pdf

https://web.maths.unsw.edu.au/~potapov/5605_2014/mcowling-fa-notes.pdf