# Sullivan minimal models

I am confused with a notation for the minimality of Sullivan model.

In particular in some books it's written that $$d(V)\subset \bigwedge^{\geq2}V$$ and in others it's written that $$Im(d)\subset \bigwedge^+V.\bigwedge^+V$$.

Is there a difference?

Also is it true that $$\bigwedge^kV^p=(\bigwedge V^p)^k$$ for some $$k,p$$ positive integers.?