Consider a continuous time branching process, which is integer or real valued (in the latter case it is called a continuous state branching process, and we restrict ourselves to the class of Feller branching diffusions) which models the time evolution of a population, to which we superimpose an interaction between the branches (which destroys the branching property). In the case of a large population, the interaction is of the type of a competition, which increases the individual death rate. We give precise conditions on the competition term, in order to decide whether the extinction time (which is also the height of the forest of genealogical trees) remains or not bounded as the ancestral population size tends to infinity, and similarly for the total mass of that forest of genealogical trees.
DOI : 10.1051/ps/2014019
Mots clés : Population with competition, extinction time, total mass of genealogical tree
@article{PS_2015__19__172_0, author = {Vi, Le and Pardoux, Etienne}, title = {Height and the total mass of the forest of genealogical trees of a large population with general competition}, journal = {ESAIM: Probability and Statistics}, pages = {172--193}, publisher = {EDP-Sciences}, volume = {19}, year = {2015}, doi = {10.1051/ps/2014019}, mrnumber = {3386369}, zbl = {1333.60188}, language = {en}, url = {http://www.numdam.org/articles/10.1051/ps/2014019/} }
TY - JOUR AU - Vi, Le AU - Pardoux, Etienne TI - Height and the total mass of the forest of genealogical trees of a large population with general competition JO - ESAIM: Probability and Statistics PY - 2015 SP - 172 EP - 193 VL - 19 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ps/2014019/ DO - 10.1051/ps/2014019 LA - en ID - PS_2015__19__172_0 ER -
%0 Journal Article %A Vi, Le %A Pardoux, Etienne %T Height and the total mass of the forest of genealogical trees of a large population with general competition %J ESAIM: Probability and Statistics %D 2015 %P 172-193 %V 19 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ps/2014019/ %R 10.1051/ps/2014019 %G en %F PS_2015__19__172_0
Vi, Le; Pardoux, Etienne. Height and the total mass of the forest of genealogical trees of a large population with general competition. ESAIM: Probability and Statistics, Tome 19 (2015), pp. 172-193. doi : 10.1051/ps/2014019. http://www.numdam.org/articles/10.1051/ps/2014019/
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