Keshav Srinivasan's user avatar
Keshav Srinivasan's user avatar
Keshav Srinivasan's user avatar
Keshav Srinivasan
  • Member for 10 years, 11 months
  • Last seen this week
65 votes
9 answers
6k views

Refuting the Anti-Cantor Cranks

40 votes
3 answers
2k views

Can you define arc length using a piece of string?

37 votes
5 answers
6k views

Did Euclid prove that $\pi$ is constant?

29 votes
2 answers
1k views

Does the box topology have a universal property?

22 votes
5 answers
3k views

Is Euclid's Fourth Postulate Redundant?

22 votes
2 answers
11k views

How can we describe the graph of $x^x$ for negative values?

20 votes
0 answers
518 views

What is the structure preserved by strong equivalence of metrics?

18 votes
2 answers
1k views

Does the Jordan curve theorem apply to non-closed curves?

16 votes
3 answers
2k views

Can sets of cardinality $\aleph_1$ have nonzero measure?

16 votes
3 answers
893 views

Could Euclid have proven that multiplication of real numbers distributes over addition?

15 votes
2 answers
591 views

Is there a notion of a continuous basis of a Banach space?

15 votes
1 answer
202 views

Are the algebraic real numbers an automatic structure?

14 votes
0 answers
236 views

What is the Galois group of the Hyperreal Numbers?

13 votes
1 answer
1k views

Does a nonlinear additive function on R imply a Hamel basis of R?

12 votes
1 answer
1k views

When is a field a nontrivial field of fractions?

12 votes
2 answers
293 views

What sequences are Cauchy in all metrics for a given topology?

12 votes
2 answers
888 views

What is Tarski’s definition of real number multiplication?

11 votes
2 answers
563 views

How would the constructible hierarchy change if you remove parameters?

11 votes
1 answer
490 views

What uniquely characterizes the germ of a smooth function?

10 votes
4 answers
2k views

Is there any way to systematically do all epsilon delta proofs?

10 votes
1 answer
2k views

Did Euclid really prove the existence of irrational numbers?

10 votes
1 answer
529 views

Could Euclid have proven that real number multiplication is commutative?

10 votes
4 answers
2k views

Can we prove that odd and even numbers alternate without using induction?

10 votes
1 answer
665 views

What is the Sigma Algebra generated by Jordan measurable sets?

9 votes
2 answers
216 views

What sets are obtained by adding $\aleph_1$ unions and intersections to the Borel algebra?

9 votes
2 answers
1k views

Are the real numbers the unique Dedekind-complete ordered set?

9 votes
2 answers
2k views

Is there a Second-Order Axiomatization of ZF(C) which is categorical?

9 votes
1 answer
752 views

Could Euclid have bisected a line segment without his method of superposition?

9 votes
1 answer
200 views

What Turing degrees can truth in $\mathbb{N}$ have for different languages?

9 votes
1 answer
1k views

Is “monoidal category enriched over itself” the same as “closed monoidal category”?

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