Mathematical intelligencer. 2007;29(3):71-73. doi: 10.1007/bf02985697 Q40.42025
Elementary set theory with a universal set
DOI: 10.1007/bf02985697
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Mathematical intelligencer. 2007;29(3):71-73. doi: 10.1007/bf02985697 Q40.42025
DOI: 10.1007/bf02985697
摘要 查看摘要