# Concept derivation guides

299 concept teaching guides, separate from the 36,000 individual question derivations.

[Search all questions & derivations →](/en/explore/)

1 1 results · Page 1 of 1



Concept guide



## [A finite-dimensional Hilbert certificate from one matrix](/en/derivations/derivation-mko-real-hilbert-space-01/?from=%2Fen%2Fderivations%2F%3Fq%3Dmko-real-hilbert-space)

Verify the consistent inner product, norm, metric and completeness of R^2 with A=[[2,1],[1,2]].

Real Hilbert space

derivation-mko-real-hilbert-space-01





1 1 results · Page 1 of 1