Statements (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:mathematical_concept
|
| gptkbp:appliesTo |
gptkb:Hilbert_spaces
|
| gptkbp:concerns |
basis in Hilbert space
orthonormal systems |
| gptkbp:field |
functional analysis
|
| gptkbp:namedAfter |
gptkb:Nina_Bari
|
| gptkbp:state |
A complete minimal system in a Hilbert space is a basis if and only if it is both a Bessel system and a total system.
|
| gptkbp:yearProposed |
1951
|
| gptkbp:bfsParent |
gptkb:Soviet_school_of_topology
|
| gptkbp:bfsLayer |
8
|
| https://www.w3.org/2000/01/rdf-schema#label |
Bari theorem
|