G Tony Jacobs's user avatar
G Tony Jacobs's user avatar
G Tony Jacobs's user avatar
G Tony Jacobs
  • Member for 10 years, 5 months
  • Last seen more than a week ago
  • Denton, TX
38 votes
0 answers
746 views

Continued fraction with prime reciprocal entries

20 votes
1 answer
2k views

Will every rational number eventually be in this set?

16 votes
3 answers
2k views

Factoring rational primes over the Eisenstein integers - when can a prime be written as $j^2+3k^2$?

16 votes
2 answers
643 views

Explicit bijection between $\Bbb R$ and permutations of $\Bbb N$

15 votes
1 answer
1k views

Bases for symmetric polynomials

13 votes
2 answers
2k views

Use of Taylor's Theorem to show nonconstant polynomials can't have all prime values

9 votes
6 answers
3k views

How to compute 2-adic square roots?

8 votes
1 answer
462 views

Identity involving sums of binomial coefficients

7 votes
3 answers
3k views

Expected number of draws to find a match

6 votes
2 answers
193 views

Is there a name for these regions produced by 4 intersecting circles? Can their areas be found without calculus?

5 votes
1 answer
4k views

Convention regarding zero vector

5 votes
1 answer
2k views

What is the radius of torsion, geometrically?

5 votes
2 answers
1k views

How is this tensor product working

5 votes
1 answer
64 views

How to see the symmetry in this trigonometric equation

4 votes
1 answer
406 views

Question arising from combinatorial proof of Fermat's little theorem

4 votes
3 answers
90 views

Equivalence of logic propositions

4 votes
1 answer
244 views

Book recommendation: History of the foundations of analysis

4 votes
1 answer
2k views

Prove that the tesseract graph is non-planar

4 votes
1 answer
260 views

Does Artin's conjecture imply that the reciprocal sum of primes with a given primitive root would diverge?

4 votes
1 answer
101 views

Gaps between numbers of the form $pq$

4 votes
0 answers
241 views

Orbit of a point under a linear transformation

3 votes
3 answers
6k views

Prove derivative is continuous - is this $\delta/\epsilon$ proof correct?

3 votes
1 answer
1k views

Find the volume of a solid of revolution given center of mass and area of $R$

3 votes
0 answers
395 views

What is this integrating-factor approach to homogeneous ODE's good for?: Better for some equations? Illustrates something worthwhile?

3 votes
2 answers
193 views

Intuition behind these statements being equivalent

3 votes
1 answer
281 views

Is this shape a fair D-24?

3 votes
0 answers
92 views

When does $[\Bbb Q(\alpha,\beta):\Bbb Q]=[\Bbb Q(\alpha):\Bbb Q][\Bbb Q(\beta):\Bbb Q]$

2 votes
1 answer
47 views

How to express all integral bases without duplication

2 votes
1 answer
90 views

Expression for the sum of submodules of a free $\Bbb{Z}$-module

2 votes
2 answers
751 views

Area of ellipse not in xy-plane