| 单词 | continuous at a point |
| 释义 | continuous at a point [kǝn¦tin·yǝ·wǝs ad ǝ `pȯint] MATHEMATICS A function f is continuous at a point x if for every sequence {xn } whose limit is x, the sequence f (xn ) converges to f (x ); in a general topological space, for every neighborhood W of f (x ), there is a neighborhood N of x such that f -1(W ) is contained in N. |
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