New posts in Vector Spaces

Counterexample to Bolzano-Weierstrass in infinite dimension

What is the difference between zero scalar and zero vector?

What isn't a vector space?

Definition of sum of subspaces.

Show if an abelian group $G$ has a $\mathbb Q$-vector space structure, then it is unique.

Direct product vs direct sum of infinite dimensional vector spaces?

Proof that the real vector space of $C^\infty$ functions with $f''(x) + f(x) = 0$ is two-dimensional

When is a vector "glued" to the origin?

Is the intersection of two orthogonal planes a line, or the zero vector?

Modeling numbers with vectors of vectors?