Similar to 部分和分

Abel's summation formula

Divergent series

Borel summation

1 + 1 + 1 + 1 + ⋯

1 + 2 + 4 + 8 + ⋯

1 − 1 + 2 − 6 + 24 − 120 + ⋯

1 − 2 + 4 − 8 + ⋯

1/2 + 1/4 + 1/8 + 1/16 + ⋯

1/2 − 1/4 + 1/8 − 1/16 + ⋯

1/4 + 1/16 + 1/64 + 1/256 + ⋯

1 + 2 + 3 + 4 + ⋯

1 − 2 + 3 − 4 + ⋯

Basic hypergeometric series

Small set (combinatorics)

Eisenstein series

Power series

Partition of unity

Annals of Mathematics

Axiom (computer algebra system)

Brilliant (website)

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