368 reputation
16
bio website tobilehman.com
location Portland OR
age 25
visits member for 2 years, 11 months
seen Apr 16 at 23:27

I work as a programmer, I enjoy Rubik's cubes, the game of Go, and coffee.


Apr
28
awarded  Yearling
Oct
27
awarded  Scholar
Oct
27
comment Binary operations defined on sets of groups?
I will look for some structural feature that gives a unique integer between 0 and n-1, this sounds like a straightforward approach.
Oct
27
accepted Binary operations defined on sets of groups?
Oct
26
comment Binary operations defined on sets of groups?
@ccc Intersection on subgroups of the same order, not arbitrary groups.
Oct
26
comment Binary operations defined on sets of groups?
@SrivatsanNarayanan Yes! For n=32, the number of isomorphism classes is 51, this is the smallest n with the property that the number of isomorphism classes is at least n. After 32, there is 48, 64, 96, 128... you can see where I'm going with this. I want to see if I can construct a group that is isomorphic to one of its elements. I want it to contain itself (up to isomorphism)
Oct
26
comment Binary operations defined on sets of groups?
Let's assume $n \in \mathbb{N}$, I am only considering finite groups. The number of isomorphism classes is at most $n!$, so $m$ is defined and finite.
Oct
26
comment Binary operations defined on sets of groups?
Oh yes, I didn't think of that. However, I'd like to have an operation that has the properties of associativity, identity and inverses. Any thoughts?
Oct
26
awarded  Student
Oct
26
asked Binary operations defined on sets of groups?
Oct
3
awarded  Nice Answer
Sep
21
answered How is $\zeta(0)=-1/2$?
Aug
30
comment How to make simple iteration in Mathematica
Could you write the original differential equations?
Aug
30
comment What is the term for a factorial type operation, but with summation instead of products?
It's not terminal, it's termial. It also doesn't matter why he put it in his books, it is exactly what the questioner was asking about.
Aug
30
comment What is the term for a factorial type operation, but with summation instead of products?
Now that I am home, I have the 3rd edition of volume one, it is on page 48.
Aug
30
comment What is the term for a factorial type operation, but with summation instead of products?
Volume 1, section 1.2.5 I believe, it is in the "Permutations and Factorials" section.
Aug
30
awarded  Autobiographer
Aug
30
answered What is the term for a factorial type operation, but with summation instead of products?
Aug
18
awarded  Supporter
Aug
11
answered Equation for the family of lines that passes through $3y-5x-10=0$ and $3y-\frac{x}{3}-\frac{5}{3}=0$