The tangent space $T_{(x,x)}(\triangle)$ is the diagonal of $T_x(X) \times T_x(X).$ - Is this proof legit?
128988
GP 1.2.10(b) The tangent space $T_{(x,x)}(\triangle)$ is the diagonal of $T_x(X) \times T_x(X).$
54496
Showing that $\mathbb{R}$ and $\mathbb{R}\backslash\mathbb{Q}$ are equinumerous using Cantor-Bernstein
60685
The vector space formed on C[0,1] and the norm $(\int_{0}^{1}|f(t)|^2 dt)^{1/2} $
112271
Definition of the hessian as a bilinear functional on the tangent space
133756
Geometric interpretation of $\det(A^T) = \det(A)$
6681
How does Cantor's diagonal argument work?
24656
Proving that $\frac{\csc\theta}{\cot\theta}-\frac{\cot\theta}{\csc\theta}=\tan\theta\sin\theta$
23399
Nature of spacetime 4-vector and tangent space?
47653
Cantor diagonalization and fundamental theorem
60981
Understanding relation between Quotient Space and $S^1$
37953
Primary Decomposition of $\mathbb{R^n}$ under T
90475
Coordinate-free proof of $\operatorname{Tr}(AB)=\operatorname{Tr}(BA)$?
61255
Tangent bundle : is a manifold
110325
proof of basic fact that torus actions are diagonalizable
145104
$T:$ $\mathbb{C}$ $\to$ $\mathbb{C}$ by $T(z)=\lambda z + \mu \bar{z}$ for every $z \in \mathbb{C}$
59192
Basis of cotangent space
24767
$N(X)$ denotes collection of all nets of $X$. $T:N(X)\to \mathcal{P}(X)$ be a map such that $T\{x_\delta\}=T\{y_\gamma\}$ if one is subnet of other.