# Branes ending on branes

From Polchinski book, I know that a one-dimensional brane can end on a higher dimensional brane. However, I was wondering if an even more generic picture could be developed, where a $$(p+1)$$-dimensional brane can end on a $$(q+1)$$-dimensional brane. I mean, given, obviously $$q\ge p$$, what are the restrictions on $$(p,q)$$, if any ?

I am far from being an expert in string theory. I would like the most simple/intuitive answer to this if possible. I tried to find papers in which this was discussed, but unfortunately, no answer was really satisfying to me...

• – Nikita Dec 28 '19 at 11:39