At this moment we
are doing a cointegration analysis and a doubt has come up about the nule
hypothesis that your programme uses in the Johansen test.We donīt know if the maximum eigenvalue
uses the same nule hypothesis as the trace contrast( as for
instance, Eviews does) , I mean, if both of them contrast the
hypothesis that there are, at most, "r" cointegration vectors or, on the
contrary, as we have read in some papers, this is only done by the trace one,
while the maximum eigenvalue contrasts that there are exactly "r" cointegration
vectors.

What we want to know
exactly is if in your programme both of them use the same nule hypothesis ( at
most "r" cointegration vectors) or the trace one uses that one, while the
maximum eigenvalue uses the other one ( exactly "r" cointegration
vectors).

Seeing the results
we have got, we think that both of them use the same one cause, if it
isnīt like that, the contrast of the maximum eigenvalue would say it exists
0 and 1 cointegration vectors at the same time.

Thanks

Javi