Similar to Small_set_(組み合わせ論)
 - 畳み込み級数Telescoping series
 - 単調収束定理Monotone convergence theorem
 - 超幾何関数Hypergeometric function
 - 調和級数Harmonic series (mathematics)
 - ディリクレの判定法Dirichlet's test
 - 等差×等比数列Arithmetico-geometric sequence
 - 発散級数Divergent series
 - ヒルベルト–ポワンカレ級数Hilbert–Poincaré series
- 部分和分Summation by parts
- 冪級数Power series
 - ボレル総和Borel summation
 - 無条件収束Unconditional convergence
 - メルカトル級数Mercator series
 - ライプニッツの調和三角形Leibniz harmonic triangle
 - リース平均Riesz mean
 - 数学Mathematics
 - 0.999...0.999...▲1 trends
 - 0次元Zero-dimensional space
 - 0の0乗Zero to the power of zero
 - 1次元One-dimensional space
 - 1+1
 - 1の冪根Root of unity
- 1の補数Ones' complement
 - 2次過程
 - 2次元Two-dimensional space
 - 2の平方根Square root of 2
 - 2の冪Power of two
- 2の補数Two's complement