Gerhard Paseman's user avatar
Gerhard Paseman's user avatar
Gerhard Paseman's user avatar
Gerhard Paseman
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  • Member for 14 years, 3 months
15 votes

Examples of seemingly elementary problems that are hard to solve?

10 votes

What are your favorite puzzles/toys for introducing new mathematical concepts to students?

9 votes

How to escape the inclination to be a universalist or: How to learn to stop worrying and do some research.

9 votes

What's a magical theorem in logic?

8 votes

Giving a math talk with no blackboard or projector

7 votes

Excellent mathematical explanations

6 votes

Sieve of Erathostenes: removing consecutive items

6 votes

Maiden Names vs. Married Names

5 votes

find the collision of a particle with a swept triangle.

5 votes
Accepted

How many binary operations are associative?

4 votes

Thom's Principle: rich structures are more numerous in low dimension

4 votes

Large Intersecting Subsets of a Set

3 votes

Can pure mathematics harness citizen science?

3 votes
Accepted

What is the number of $2n\times 2n$-matrices $g=\begin{pmatrix} A & B \\\ C & -A^{t} \end{pmatrix}$, $B$ and $C$ symmetric, over the finite field $\mathbb{F}\_{q}$ with $\mathrm{rank}(g)=k$?

3 votes

Unmathematical habits of thought and action which would be of use to mathematicians

3 votes

Fast matrix multiplication

3 votes

Walking around Santa Cruz, track around the soccer field

3 votes

Analogues of Jacobsthal's function

2 votes

partly obscured Rubik's cube

2 votes

Threading pinholes in the wall of cylinder to pass through an internal coordinate

2 votes

What is the smallest rectangle that will contain all squares of size 1 to 33?

2 votes

Erik Westzynthius's cool upper bound argument: update?

2 votes

Believing the Conjectures

2 votes

Smallest square to wrap a cylinder

2 votes

Math for a cake

2 votes

power of adjacency matrix

2 votes

Provided a list of sets, $L$, computing an array where each entry $q_i \in Q$ is the family of sets in $L$ that have intersection $k$ with $l_i \in L$

2 votes

Positive results coming from paradoxes

1 vote

What is the maximal sparsity of a matrix?

1 vote

Hamiltonian cycles in power-graphs