Degree Type
Dissertation
Date of Award
2011
Degree Name
Doctor of Philosophy
Department
Mathematics
First Advisor
Krishna B. Athreya
Abstract
For branching processes, there are many well-known limit theorems
regarding the evolution of the population in the future time. In
this dissertation, we investigate the other direction of the
evolution, that is, the past of the processes. We pick some
individuals at random by simple random sampling without replacement
and trace their lines of descent backward in time until they meet.
We study the coalescence problem of the discrete-time multi-type
Galton-Watson branching process and both the continuous-time
single-type and multi-type Bellman-Harris branching processes
including the generation number, the death time (in the
continuous-time processes)
and the type (in the multi-type processes) of the last common ancestor
( also called the most recent common ancestor) of the randomly
chosen individuals for the different cases (supercritical, critical, subcritical and explosive).
Copyright Owner
Jyy-i Joy Hong
Copyright Date
2011
Language
en
Date Available
2012-04-06
File Format
application/pdf
File Size
151 pages
Recommended Citation
Hong, Jyy-i Joy, "Coalescence in Bellman-Harris and multi-type branching processes" (2011). Graduate Theses and Dissertations. 10103.
https://lib.dr.iastate.edu/etd/10103
