olemus
vektorruum koos selles defineeritud skalaarkorrutisega
= a vector space with its operation of inner product

näiteid
(i) reaalarvude hulk on ühemõõtmeline vektorruum:
arvude x ja y skalaarkorrutis ⟨x,y⟩ on tavaline korrutis x y
(ii) eukleidiline ruum, kus kahe vektori skalaarkorrutis
on nende vektorite vastavate koordinaatide
korrutiste summa

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

https://linear.axler.net/InnerProduct.pdf

https://www.ndsu.edu/pubweb/~novozhil/Teaching/329%20Data/13.pdf

https://www.math.purdue.edu/academic/files/courses/2010spring/MA26200/4-11.pdf

https://prezi.com/p/2x9biebjhjwg/applications-of-inner-product-spaces/

https://www.quora.com/What-are-some-real-life-applications-of-inner-product-space