limit point
(topology) Given a subset S of a given topological space T, any point p whose every neighborhood contains some point, distinct from p, which belongs to S.
(organic chemistry) An alkyl aldehyde
derivatized again
(finance) Money set aside to pay rent.
標準位相を持つ実数直線では、0は集合{1/n : n∈N}の極限点であり、0の任意の近傍には0と異なる1/nが含まれる。
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