List questions from direct-sum | MathQA

Find a subspace $W$ of $F^4$ such that $F^4=U \oplus W$

Published on 01 Jan 2023 - 20:58

Proving existence of matrix N such that M = MNM

Published on 04 Jan 2023 - 5:07

Kronecker product between a matrix and a direct sum

Published on 27 Mar 2026 - 4:15

How do I prove that if $A$ and $B$ are complementary then $A^\perp$ and $B^\perp$ are also complementary in $\mathcal{H}$ Hilbert space?

Published on 08 Jan 2023 - 15:42

Extending a basis to make a direct sum

Published on 09 Jan 2023 - 17:00

Prove that if $\dim V= n$ and $S$ is a subspace (of dimension $n-1$), then if $v$ doesn't belong to $S$: $\langle v \rangle + S$ is a direct sum

Published on 11 Jan 2023 - 1:28

Linear transformation and direct sum

Published on 12 Jan 2023 - 20:52

Decomposing the topology of a normed linear space as the product topology of its subspaces

Published on 18 Jan 2023 - 7:39

A complex involving an infinite direct sum

Published on 23 Jan 2023 - 16:08

Exercise 2, Section 6.6 of Hoffman’s Linear Algebra

Published on 24 Jan 2023 - 11:14

range of continous linear operator between banach spaces with closed algebraic complement

Published on 24 Jan 2023 - 12:44

Determine a percentage of an unfilled quota

Published on 25 Jan 2023 - 21:21