“DeltaSystem”的概念、定义、习题解题方法及翻译-数学辞典

单词	DeltaSystem
释义	delta system If $S$ is a set of finite sets then it is a $\\Delta$ -system if there is some (possibly empty) $X$ such that for any $a,b\\in S$ , if $a\eq b$ then $a\\cap b=X$ .
随便看	null tree NUMB3RS NUMB3RS Number number NumberField number field NumberFieldThatIsNotNormEuclidean number field that is not norm-Euclidean NumberOfDistinctPrimeFactorsFunction number of distinct prime factors function NumberOfnondistinctPrimeFactorsFunction number of (nondistinct) prime factors function NumberOfPrimeIdealsInANumberField number of prime ideals in a number field NumberOfTheBeast number of the beast NumberOfUltrafilters number of ultrafilters NumberOfUnrootedLabeledTrees number of unrooted labeled trees NumberTheory number theory NumerableSet numerable set

数学辞典收录了18232条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。

delta system