ThmDex – An index of mathematical definitions, results, and conjectures.

▼	Set of symbols
▼	Alphabet
▼	Deduction system
▼	Theory
▼	Zermelo-Fraenkel set theory
▼	Set
▼	Binary cartesian set product
▼	Binary relation
▼	Map
▼	Operation
▼	N-operation
▼	Binary operation
▼	Enclosed binary operation
▼	Groupoid
▼	Ringoid
▼	Semiring
▼	Ring
▼	Left ring action
▼	Module
▼	Vector space
▼	Vector subspace
▼	Linear span
▼	Euclidean complex linear span

Definition D6151

Euclidean real linear span

Results

▶	R5482: Columns of a real identity matrix span the whole space
▶	R5485: Columns of a real matrix need not span the whole space