Do exist an injective linear map from $\mathbb{R}^5\rightarrow\mathbb{R}^4$
127488
If $L:\mathbb{R}^n \rightarrow \mathbb{R}^m$ and $m<n$ linear trans. What does this tell about injectivity and surjectivity?
109498
Linear maps $f: M_n \longrightarrow \mathbb{R}$ such that $f(AB) = f(BA)$
113671
Frobenius Automorphism as a linear map
74330
$\mathbb{R}^n$ not homeomorphic to open subset of $\mathbb{R}^m$
90010
Can we ascertain that there exists an epimorphism $G\rightarrow H$?
93923
No surjective bounded linear map from $\ell^2(\mathbf{N})$ to $\ell^1(\mathbf{N})$
57269
A special bijection between $\mathbb{R}\times \mathbb{R}$ and $\mathbb{R}$
93776
Bijective mapping between $\mathbb{R}^2$ and $\mathbb{R}$?
61616
category of linear maps
134104
Is there a Cantor-Schroder-Bernstein statement about surjective maps?
101319
Properties of a continuous map $f : \mathbb{R}^2\rightarrow \mathbb{R}$ with only finitely many zeroes
88857
Prove that Gauss map on M is surjective
98696
Is the exponential map ever not injective?
83446
bijective continuous function on $\mathbb R^n$ not homeomorphism?
88981
Explicit Homeomorphism from $\mathbb{R}^2$ to open disk
91222
Isomorphism between $\mathfrak o(4,\mathbb R)$ and $\mathfrak o (3,\mathbb R) \oplus\mathfrak o (3,\mathbb R) $
157378
On an injective ring homomorphism from the ring of continuous functions to the ring of differentiable functions