video

See Loop analysis

Derived using Topological trace formula

gives topological polynomial, which is just the characteristic polynomial of the transition matrix

Topological zeta function

https://qchu.wordpress.com/2009/11/17/the-lindstrom-gessel-viennot-lemma/

https://math.stackexchange.com/questions/13754/graph-theoretic-interpretation-of-determinant

https://mathoverflow.net/questions/134956/determinants-in-graph-theory

Examples from fsts. See notebook and here

FST 10

http://www.wolframalpha.com/input/?i=1-3z%5E2%3D0

Can analyze forward or backward

FST 21

1-2*z+z^2-2*z^3+2*z^4=0

(2^(-log_2(0.59)*40)/2^40)*10^6

-log_2(0.59)

2.7*log_2 (100)/(37-14)