Metadata aliases: [] shorthands: {} created: 2021-12-14 10:57:52 modified: 2022-01-10 04:13:03 Suppose that is a sequence. Then we define series by summing up the elements of the sequence:
aliases: [] shorthands: {} created: 2021-12-14 10:57:52 modified: 2022-01-10 04:13:03
Or