Ishan Deo's user avatar
Ishan Deo's user avatar
Ishan Deo's user avatar
Ishan Deo
  • Member for 5 years, 9 months
  • Last seen this week
  • IIT Kanpur, India
7 votes
2 answers
218 views

Are Disjoint Open Subsets Contained in Disjoint Open Sets in a General Topological Space?

5 votes
1 answer
119 views

Prove convergence of formula for length of parameterized curve

4 votes
4 answers
186 views

How to Motivate Open-Cover Formulation of Compactness in a Metric Space?

4 votes
2 answers
185 views

Convergent Sequences in Extremally Disconnected Hausdorff Spaces

3 votes
1 answer
124 views

Nagata-Smirnov Metrization Theorem for Pseudometric Spaces

3 votes
2 answers
234 views

Existence of Hausdorff space comprised of disjoint dense subsets

3 votes
1 answer
667 views

Cantor's Intersection Theorem iff complete metric spaces?

3 votes
1 answer
114 views

Is every First Countable space the continuous image of a Pseudometric space under an open map?

3 votes
0 answers
285 views

Introductory book on (only) Topological Manifolds?

3 votes
0 answers
59 views

Projective representation of restricted indefinite orthogonal group $SO^+(p,q)$

2 votes
0 answers
363 views

Reference request: Representation Theory of Indefinite Orthogonal Lie Group and its Lie Algebra

2 votes
1 answer
168 views

Confusion about "contradiction" in surjectivity of exponential map for $SL_2(\mathbb{C})$

2 votes
1 answer
193 views

Strong Law of Large Numbers for i.i.d. with undefined (not infinite) mean

2 votes
1 answer
115 views

Dimension of subspace $W$ of vector space $V$ for infinite-dimensional vector spaces

2 votes
1 answer
150 views

Some Counterexamples on Connectedness

2 votes
1 answer
164 views

Continuum cannot be written as Countable Union of Disjoint Closed Subsets

2 votes
1 answer
371 views

Metrizability of One-Point (Alexandroff) Compactification

2 votes
1 answer
37 views

Isolated Points of Countable H-Closed Spaces

2 votes
2 answers
164 views

Necessity of Archimedean property in construction of Reals?

2 votes
0 answers
138 views

Constructing Real Numbers using Bolzano-Weierstrass Theorem?

2 votes
1 answer
75 views

Example of Semiregular and $T_1$ Space which is not Hausdorff

2 votes
1 answer
31 views

Prove that the sequence $x_0 \operatorname{:= }x, x_n \operatorname{:= } f(x_{n-1})$ in compact spaces has a convergent subsequence converging to $x$

2 votes
0 answers
38 views

Question on Closed Continuous Onto Map with $f^{-1}(\{y\})$ having compact boundary for all $Y$

2 votes
2 answers
213 views

Are Products of Arc Connected Spaces Arc Connected, or vice versa?

2 votes
1 answer
140 views

Paracompact Hausdorff Space with Dense Lindelof subset is Lindelof

2 votes
2 answers
163 views

Example of Separable Product Space with cardinality greater than continuum?

2 votes
1 answer
209 views

Example for Sequentially Compact space which is not Compact not involving ordinals?

1 vote
3 answers
161 views

Are Closed Subspaces of Pseudocompact spaces Pseudocompact?

1 vote
1 answer
52 views

Embedding Regular Lindelöf Space in a Hausdorff Space

1 vote
1 answer
52 views

Proof of Equivalent Characterisation of Complete Metric Space without using Compactifications