# Tag Info

Mandel assumes that $\alpha,\beta$ are functions of $t$ and $r$ and the market price of risk $\lambda$ is a function of $t\,.$ This model is a Markovian short rate model. Other than that, it is too general to have a name. The following named models are special cases: \begin{align} &\alpha(t,r(t)) & \beta(t,r(t)) & & \text{ Name }\\[3mm] \...