  Inflation in an open universe produced by Coleman-De Luccia (CDL) tunneling
induces a friction term that is strong enough to allow for successful
small-field inflation in models that would otherwise suffer from a severe
overshoot problem. In this paper, we present a polynomial scalar potential
which allows for a full analysis. This provides a simple model of single-field
open inflation on a small-field inflection point after tunneling. We present
numerical results and compare them with analytic approximations.
