- #1
V0ODO0CH1LD
- 278
- 0
I know I can define a sequence on a set ##X## as a function ##a:T\rightarrow{}X##, where ##T## is a countable totally ordered set. But what about series? Can I define a series as a function ##\omega{}:a\rightarrow{}A##, where ##A\in{}X##? Or is this too general to be a series? Do I need to define an operation on ##X## so that I can "add" the terms of the sequence?