A dual extremum principle for a population equation

1974 ◽  
Vol 13 (4) ◽  
pp. 490-492
Author(s):  
W. L. Chan ◽  
G. G. Leininger
1999 ◽  
Vol 5 (3) ◽  
pp. 663-683 ◽  
Author(s):  
Abdelaziz Rhandi ◽  
◽  
Roland Schnaubelt ◽  

2005 ◽  
Vol 2005 (20) ◽  
pp. 3273-3289 ◽  
Author(s):  
G. Fragnelli

We propose a new age-dependent population equation which takes into account not only a delay in the birth process, but also other events that may take place during the time between conception and birth. Using semigroup theory, we discuss the well posedness and the asymptotic behavior of the solution.


1966 ◽  
Vol 14 (3) ◽  
pp. 446-452 ◽  
Author(s):  
R. K. Miller
Keyword(s):  

1997 ◽  
Vol 59 (6) ◽  
pp. 1145-1154 ◽  
Author(s):  
Zoltán Varga ◽  
Eörs Szathmáry
Keyword(s):  

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