MHB Equivalence Relation: Partition of {a,b,c} - Andy

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The partition {{a,b},{c}} of the set {a,b,c} indicates that elements a and b are equivalent to each other, while c is in its own equivalence class. To generate the equivalence relation for this partition, it is sufficient to express it as {a,b} x {a,b} U {c} x {c}. This notation captures the relationships among the elements accurately. Therefore, the equivalence relation correctly reflects the partition structure. The discussion confirms the validity of this representation.
andydoinmath
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If {{a,b},{c}} is the partition of {a,b,c}. When finding the equivalence relation used to generate a partition, is it enough to say {a,b}x{a,b} U {c}x{c}?

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Andy
 
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First trick I learned this one a long time ago and have used it to entertain and amuse young kids. Ask your friend to write down a three-digit number without showing it to you. Then ask him or her to rearrange the digits to form a new three-digit number. After that, write whichever is the larger number above the other number, and then subtract the smaller from the larger, making sure that you don't see any of the numbers. Then ask the young "victim" to tell you any two of the digits of the...

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