# What is meant by the abbreviation 'MSV solution', used in the context of DSGE modeling?

What is meant by the abbreviation MSV solution, used in the context of adaptive learning in DSGE modeling? E.g. see Bullard and Mitra (2002)

minimum state variable (MSV) solutions it is in full, but what does that mean?

As you can see in Bullard and Mitra (2002), they talk about MSV solution when they want to show that there is unique solution that can determine their model coefficients $$a,b,c$$, so when they talk about MVS solution they are just saying that they applied this approach to select an unique solution this way as opposed to some other one.