Am 18.03.2024 um 00:15 schrieb Alecos Papadopoulos:
 On page 349 of gretl's user guide the state space model is defined as
 
[Just to be clear for anybody else on this list, this is just the basic 
first formulation, not the most general form that gretl supports.]
 Later, when presenting the state-space GUI (p. 369) we read that it 
 supports models of the form
 My only question is about the time indices on the state vector in the 
 transition equation.
 
Yeah, that's a good question. My guess would be that the latter 
representation is shifted relative to gretl's convention, but I'm not 
really sure. @jack, can you comment?
cheers
sven