Dimension of a vector space of polynomials in 3 variables of degree $d$ over $\mathbb{R}$
56898
Number of monomials of certain degree
92510
Proving a vector space is infinite-dimensional
121047
Proof: Sum of dimension of orthogonal complement and vector subspace
26780
Dimension of cone of projective variety
79061
show that {$(x_1,x_2,x_3,x_4)\in\mathbb{F}^4$:$x_3=5x_4+b$} is a subspace
88956
For any three vectors $x,y,z\in\mathbb{R}^d$, we have $ \|y-z\|\cdot\|x\|\leq\|x-y\|\cdot\|z\|+\|z-x\|\cdot\|y\|$
14429
dimension of a subspace spanned by two subspaces
19280
Jordan Canonical Form determined by characteristic and minimal polynomials in dimension $3$, but not beyond
131993
Prove that vector space and dual space have same dimension
77620
Irreducible polynomials over $\mathbb Q$ and $\mathbb Z $
141983
Complex polynomial of degree $n$
84871
Determining the dimension of span$\{AB-BA : A,B \in M_{n \times n}(\mathbb R) \}$
107389
Show that the vector space of real functions is not finitely spanned
102371
Proving that two vector spaces of equal dimension are isomorphic
41347
The dimension of the intersection of two vector subspaces
87692
Basis and dimension of vector space
28658
$R$ with an upper bound for degrees of irreducibles in $R[x]$