“upper semicontinuous function”的概念、定义、翻译、参考文献-科学参考

单词	upper semicontinuous function
释义	upper semicontinuous function [`ǝp·ǝr ¦sem·i·kǝn`tin·yǝ·wǝs `fǝŋk·shǝn] ^MATHEMATICS A real-valued function f (x ) is upper semicontinuous at a point x₀ if for any small positive ε, f (x ) always is less than f (x₀) + ε for all x in some neighborhood of x₀.
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