Damian Reding's user avatar
Damian Reding's user avatar
Damian Reding's user avatar
Damian Reding
  • Member for 9 years, 4 months
  • Last seen this week
  • Rotterdam, Netherlands
131 votes
19 answers
7k views

Past open problems with sudden and easy-to-understand solutions

67 votes
6 answers
7k views

Proving the existence of a proof without actually giving a proof

44 votes
4 answers
4k views

What's between the finite and the infinite?

21 votes
5 answers
2k views

Is $11^2+12^2+13^2+14^2+15^2+16^2=1111$ special?

18 votes
2 answers
689 views

Wanted: A simple and didactically optimized integration theory

17 votes
3 answers
839 views

How, if at all, does pure mathematics benefit from $2^{74207281}-1$ being prime?

15 votes
3 answers
2k views

Evidence against Goldbach's Conjecture?

13 votes
2 answers
206 views

Is every natural number the truncation of a prime?

12 votes
3 answers
531 views

What's true in $\mathbb{R}^4$, false in $\mathbb{R}^3$ and uninteresting in $\mathbb{R}^5$?

10 votes
2 answers
1k views

Quartic as a product of quadratics

9 votes
1 answer
100 views

Relative consistency of slightly modified GCH

9 votes
1 answer
239 views

Flies in a cube

8 votes
3 answers
207 views

Mathematics hiding in plain sight

7 votes
1 answer
341 views

Monotonic "Subfunction"

7 votes
1 answer
153 views

Approximating $x^m$ by exponentials

7 votes
1 answer
166 views

Cardinality of order topology?

6 votes
2 answers
465 views

Degree of minimal polynomial of the sum of two algebraic elements over $\mathbb Q$

6 votes
0 answers
107 views

One more AC equivalence question

6 votes
1 answer
154 views

Is there a simple formula for the cardinality of $\{A\subseteq\kappa\mid |A|\leq\lambda\}$ when $\lambda\leq\kappa$?

6 votes
4 answers
897 views

Instance of Mean Value Theorem

6 votes
4 answers
1k views

What should "The Fundamental Theorem of Linear Algebra" assert? [closed]

5 votes
2 answers
330 views

Planarity on $10$ vertices

5 votes
0 answers
147 views

Subfields of algebraic numbers

5 votes
0 answers
268 views

Bishop-Phelps theorem

5 votes
3 answers
231 views

Examples of exotic (non-)norms?

5 votes
1 answer
115 views

Do we need finite intersections of open sets to be open?

4 votes
1 answer
145 views

Why do regulated functions receive so little attention in elementary analysis courses?

4 votes
0 answers
75 views

Codimensions of $\mathbb{Q}$-subspaces of $\mathbb{R}$

4 votes
1 answer
143 views

Unmasking the completeness of $\mathbb{R}$

4 votes
2 answers
84 views

Convergence Problem in Normed Space

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