4 ms·

Thanks. I was thinking subsequence ~ substring but that’s a false analogy apparently!

• seanhunter 10mo ago
  Yeah it’s a bit confusing. It’s also confusing when you see them written because they’re actually written usually with a nested subscript. Like a n k With the k smaller than the n which is in turn smaller than the a. Sequences of all kinds are just a function from the integers to the reals so I don’t know why we had to go and invent a whole new notation for them just to be extra obtuse.