Aging of a power-law network

I first had a clue yesterday when I was driving on a mountainous road near Knoxville. I spent two hours today and worked out a solution. This is much easier than I thought. It turns out the the expected mortality rate of the system is the weighted average of modular mortality rates, and this is probably a general solution.

2013 Dec 9. Power-law network can lead to the Gompertz-Makeham model of aging.  The Makeham term is basically the non-aging term.