these damn signs are confusing me...
I'm just doing questions again re arbitrage etc.
+ means positive cashflow, right? and  means negative, so selling somehting means you get the cash so it's a + (right?) and borrowing means you also get the cash, so also a +, (right?)
but then in the replicating portfolio models,  means borrowing? and + means buying?
I keep messing up these questions and can't get this straight. I can do the math, but the verbally interpretting is where I get confused.
Sorry for such a stupid question...
