Prove that a specific map induces an embedding from $\mathbb{R}P^{2}$ into $\mathbb{R}^6$
92033
Prove that $g$ is a submanifold: $g (t,u,v) = (t^2,u^2,v^2,\sqrt{2}uv, \sqrt{2}tv,\sqrt{2}tu)$
5802
Proving the universal mapping property for polynomial rings
28406
composition of certain covering maps
37953
Primary Decomposition of $\mathbb{R^n}$ under T
723
Is there a constructive way to exhibit a basis for $\mathbb{R}^\mathbb{N}$?
139779
Homotopic maps have homotopy equivalent mapping cones
27670
Group homomorphisms $\mathbb{Q}\to\mathbb{R}$
25874
Showing that a certain map is not flat by explicit counterexample
27735
Morphism to Projective Space $\mathbb{P}^m$
41035
Mapping that proves $\mathbb{Z} \subset \mathbb{Q}$
115272
Showing that projections $\mathbb{R}^2 \to \mathbb{R}$ are not closed
41846
$(\mathbb{R}^n,\|\cdot\|_{p})$ is isometrically isomorphic to $(\mathbb{R}^n,\|\cdot\|_{q})$ iff $p=q,$
142174
Nonexistence of an injective $C^1$ map between $\mathbb R^2$ and $\mathbb R$
34260
Injective function from $\mathbb{R}^2$ to $\mathbb{R}$?
109080
Is the kernel of a map to a finitely presented module finitely generated?
93776
Bijective mapping between $\mathbb{R}^2$ and $\mathbb{R}$?
101319
Properties of a continuous map $f : \mathbb{R}^2\rightarrow \mathbb{R}$ with only finitely many zeroes