Sahiba Arora's user avatar
Sahiba Arora's user avatar
Sahiba Arora's user avatar
Sahiba Arora
  • Member for 8 years, 7 months
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19 votes
2 answers
2k views

What is the best way to learn Differential forms?

15 votes
1 answer
2k views

Sequence converging to different limits

11 votes
2 answers
694 views

$C_c(X)$ is complete, then $X$ is compact

10 votes
1 answer
704 views

Complete Inequivalent Norms

7 votes
3 answers
1k views

Number of $m$-dimensional subspaces of $V$ is same as number of $(n-m)$-dimensional subspaces.

6 votes
1 answer
712 views

Hamel Dimension of Infinite Dimensional Separable Banach Space

6 votes
1 answer
150 views

Find all ideals $\mathbb{Z}[x,y]$ such that the corresponding factor ring is a UFD

5 votes
2 answers
1k views

Continuity of a linear operator in Schwartz Space

5 votes
3 answers
793 views

Prove that as a $\Bbb Q$ vector space $\Bbb R^n$ is isomorphic to $\Bbb R$

5 votes
1 answer
675 views

If $ f $ is a Borel function, and $ X $ and $ f(X) $ are independent, then $ \mathsf{P}(f(X) = c) = 1 $ for some constant $ c \in \mathbb{R} $.

5 votes
1 answer
2k views

Tangent space of open set [duplicate]

4 votes
1 answer
284 views

Colorability of planar graphs.

4 votes
2 answers
1k views

Cyclic vector implies commuting linear operator is a polynomial [duplicate]

4 votes
2 answers
5k views

Transfinite Recursion

4 votes
1 answer
1k views

Doubt in Pratt's Lemma

4 votes
1 answer
97 views

Find if there exists an element which is sum of squares

4 votes
1 answer
135 views

Sorgenfrey Line is not a topological vector space

4 votes
1 answer
469 views

Entropy of a homeomorphism on a unit circle is zero

3 votes
3 answers
171 views

Let $f : I \to \mathbb R$ be continuous. For any compact interval $J \subseteq f(I), \exists$ a compact interval $K \subseteq I$ with $f(K)=J.$

3 votes
2 answers
2k views

Convex combination of matrices

3 votes
1 answer
242 views

Connected subsets of $C[0,1]$

3 votes
2 answers
11k views

Check Solution: $x^2y''+xy'-y=x^2e^x$ via Variation of Parameters

3 votes
0 answers
525 views

Inequivalent complete norms

3 votes
1 answer
576 views

Inequivalent norms

3 votes
3 answers
2k views

Identity is the only real matrix which is orthogonal, symmetric and positive definite

2 votes
1 answer
1k views

Applications of Lusin's Theorem

2 votes
1 answer
472 views

Uniform random variable

2 votes
1 answer
205 views

Inverse image of submanifold is not a submanifold

2 votes
1 answer
394 views

Showing that $f$ is topologically transitive if every closed invariant subset has empty interior

2 votes
0 answers
89 views

Proving/disproving a sufficient condition for Gâteaux differentiability