How to specify that a variable is an Integer?

*To*: mathgroup at smc.vnet.net*Subject*: [mg5016] How to specify that a variable is an Integer?*From*: "Economics Department" <jruiz at bu.edu>*Date*: Sat, 19 Oct 1996 02:25:57 -0400*Organization*: Boston University*Sender*: owner-wri-mathgroup at wolfram.com

parameters. Mathematica is able to compute the indefinite integral when it is supplied integer values of a and b but cannot solve it when they are left as parameters. parameters a and b are Positive Integer numbers? Juan M. Ruiz Boston University Department of Economics email: jruiz at bu.edu