27

Answers

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1

Enumerating 0-1 finite boxes without null rays.

3

Series defined by a fixed-point functional equation

3

Diophantine question

1

g.c.d. and Euler’s totient function

10

partly obscured Rubik’s cube

3

Subwords of cube-free binary words

7

A conjecturally easier version of matrix Descartes rule of signs.

4

Minimal blocking objects with shadows like a cube

4

When has pure mathematics been influenced by the social context of mathematicians?

5

Interesting mathematical documentaries

4

How the Fast Fourier Transform got its name

4

classify strongly regular graph with parameter (25,12,5,6)

7

Stacks in modern number theory/arithmetic geometry

2

The prime divisor

9

Sums of two same powers modulo $p$

1

Factoring a certain quartic mod primes

4

Traversing the infinite square grid

1

Has Sid Sackson’s “Hold That Line” been analyzed?

13

Can the difference of two distinct Fibonacci numbers be a square infinitely often?

4

Short Course Suggestions For High School Students

8

Why tropical geometry?

9

Casual tours around proofs

1

Proving a sequence of integrals increases (iterated minimax distributions)

1

positive hermitian elements in $M_n(\mathbb{C})$

2

Repeatedly indexing into an $\infty$-sequence of integers

7

A hypercube-related graph

1

How many ways to partition $n=a.b$ into $a$ equal sized parts with equal sums?