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He is asking "what is the line between too sparse and not too sparse" and attempting to characterize the example you gave of each in terms of approximate relati
by notafraudster 6y ago
He is asking "what is the line between too sparse and not too sparse" and attempting to characterize the example you gave of each in terms of approximate relative sparsity.
- ColinWright 6y agoRight ... understood. I don't have an answer, it's not my area, but it does feel a lot like the condition "sum(1/n) diverges" is likely to be close, but that's just a gut feeling.
- RaptorJ 6y agoAh well there isn't one, from any divergent series you can construct a more slowly growing (but still divergent) series.