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Riley's user avatar
Riley
  • Member for 8 years, 3 months
  • Last seen more than a month ago
18 votes
2 answers
614 views

How to translate mathematical intuition into a rigorous proof?

14 votes
2 answers
2k views

Does Cauchy-Schwarz Inequality depend on positive definiteness?

10 votes
3 answers
2k views

Prove that the Sylvester equation has a unique solution when $A$ and $-B$ share no eigenvalues

9 votes
1 answer
744 views

Rock Paper Scissors Team Building with Rule Change

7 votes
2 answers
629 views

If a triangle is not equilateral, must its orthocenter and circumcenter be distinct?

3 votes
2 answers
417 views

Sylvester Equation over GF(2)

3 votes
1 answer
768 views

Is a function still homogeneous if it factors out the absolute value of $t$ or a non-integer exponent of $t$?

2 votes
1 answer
270 views

Prove: $x^a$ and $x^b$ are integers implies $x$ is an integer for all $x\in\mathbb{R}$ iff $a$ and $b$ are coprime?

1 vote
0 answers
156 views

Extending the term "series-reduced" to graphs in general

1 vote
1 answer
60 views

What's the chromatic number of an open disk?

1 vote
1 answer
60 views

What's wrong with my proof of quotient rings?

0 votes
1 answer
54 views

Is it ever possible for these 3 criteria to be true regarding modular matrices?