Bifalgorithm post · Brisk · Chapter 1

How many members does the set V contain?

How many members does the set V contain? (Brisk · Chapter 1) — "Consider this set: V = { 3 , 5 , { 5 , 4 } , 2 } . This set has four (not five) members. Three…

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Set V and the distinction between its members and nested-set members
V has four members, not five
The four members of V are 3, 5, {5, 4}, and 2
Three members of V are integers: 2, 3, and 5
The fourth member of V is an unnamed set
The unnamed set has two members: 4 and 5
4 is not a member of V

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How many members does the set V contain?

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Brisk

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"Consider this set: V = { 3 , 5 , { 5 , 4 } , 2 } . This set has four (not five) members. Three of V ’s members are integers: 2, 3, and 5. The other one is a set (with no name given). That other set, by the way, has two members of its own: 4 and 5. If you were asked, “is 4 ∈ V ”? the answer would be no."

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