%0 Journal Article %T Birth and death processes with absorption %A Mourad E. H. Ismail %A Jean Letessier %A Galliano Valent %J International Journal of Mathematics and Mathematical Sciences %D 1992 %I Hindawi Publishing Corporation %R 10.1155/s0161171292000632 %X Spectral measures and transition probabilities of birth and death processes with 0= 0=0 are obtained as limite when 0 ¡é ¡¯0+ of the corresponding quantities. In particular the case of finite population is discussed in full detail. Pure birth and death processes are used to derive an inequality for Dirichlet polynomials. %K Markov process %K and inequality for Dirichlet polynomials. %U http://dx.doi.org/10.1155/S0161171292000632