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amcalde
  • Member for 9 years, 10 months
  • Last seen more than 1 year ago
  • Albuquerque, New Mexico
14 votes
3 answers
3k views

Example of a surface where more than one coordinate patch is needed.

9 votes
2 answers
369 views

Good Reference for Justifying (less well-known fields of) Math?

9 votes
2 answers
597 views

Hands of the clock, Revisited.

6 votes
2 answers
238 views

Number of Ways to Fill a Matrix with symbols subject to Weird contsraint.

5 votes
3 answers
237 views

For the Sake of Argument

5 votes
3 answers
14k views

Can I use Dijkstra's Algorith for finding ALL shortest paths?

5 votes
1 answer
159 views

Expected number of turns for SPROUT

5 votes
2 answers
440 views

Computing the $n^{\textrm{th}}$ permutation of bits.

4 votes
1 answer
185 views

Differential Geometry Intuition Question

4 votes
1 answer
255 views

Difference Puzzles

3 votes
3 answers
126 views

What is the Pedagogical Justification for Substitution?

3 votes
1 answer
198 views

How do I count the solutions of $m^2 + m n + n^2 = T$?

3 votes
2 answers
61 views

How many sequences of positive integers contain the positive integers?

3 votes
3 answers
152 views

(Perhaps) An Easy Combinatorics Problem:

3 votes
2 answers
913 views

Counting permutations that respect a partial order

3 votes
1 answer
3k views

Counting Coprime Numbers in a range:

2 votes
1 answer
315 views

Finding all solutions: $a^2 + b^2 = c^2 + d^2$

2 votes
2 answers
333 views

Maximum GCD of two polynomials

2 votes
1 answer
194 views

Find Solutions To Some Diophantine Equations

2 votes
1 answer
60 views

How many ways can I show integer-linear dependence of $n$ vectors with bounded coefficients?

2 votes
3 answers
154 views

How to check a polygon in $\mathbb{R}^2$ for convexity.

2 votes
0 answers
85 views

Connected Sum: Actual Example

2 votes
2 answers
84 views

Can a rectangle in the plane contain exactly 51 lattice points?

2 votes
1 answer
128 views

Largest Convex Region in a Star?

2 votes
1 answer
501 views

How do you calculate the width of the Poset Lattice of Divisors?

2 votes
2 answers
345 views

How to calculate power series with a large norm matrix.

1 vote
0 answers
416 views

All lattice points close to a line with an irrational slope

1 vote
1 answer
331 views

Is a stretched out torus still a $C^\infty$ manifold?

1 vote
2 answers
1k views

When is a point in the plane inside a simple closed path?

1 vote
0 answers
28 views

Explain the Concept of "endedness"