[PLEASE HELP] Can someone explain this mathematical formula?

[Drunken Cat]

P・nΣi＝1γi（1＋ρ）＋Pn（1＋ρ）n　

I'm pretty sure P stands for Price, but that's about all I can take from this.

I'm reading a paper from my future professor in Japan (written in Japanese).

I can handle the language part, but I'm at a loss when it comes to this formula.

The field is economics by the way.

I haven't yet studied advanced math, and I remember fuck all when it comes to the mathematical formulas I learned through route memorization as an undergrad.

[Drunken Cat]

Wait, I think it's a formula for discounting the sum of future rents to present value.

Still don't remember the mathematical ****, but at least I know what this is now.

[Elie]

economics is for *******

[Drunken Cat]

economics is for *******

Thank you for your the delightfully insightful thoughts on the matter.

[starjammer]

Its showing up as random symbols for me...

Maths was never my strong point anyway.

[Elie]

Thank you for your the delightfully insightful thoughts on the matter.

u r gay

[Drunken Cat]

u r gay

It's called sarcasm, as well as writing style-two things clearly lost on you.

[TRAVI$]

Yeah, those Japs are pretty fucking weird.