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isnt that example line wrong???

Posted by nicola

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nicola

isnt that example line wrong???
March 28, 2007 11:20AM

Registered: 18 years ago
Posts: 24
Rating: 0

in the table in assignment 1, the given min value for union is N2. surely it is wrong...it should be n1

since union is all the tuple in one set , or the other or both,
so the min is the smaller set
but 0< n1 < n2
so n1 is the smallest set
therefore the min should be n1

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Anonymous User

Re: isnt that example line wrong???
April 02, 2007 10:06AM

Rating: 0

I think N2 would be the minimum because it is the bigger set - n2 may contain everything that is in N1 plus some extra things... you can't just "leave out" the extra things.

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vbiljja

Re: isnt that example line wrong???
April 02, 2007 01:58PM

Moderator
Registered: 18 years ago
Posts: 46
Rating: 0

The expression is union therefore the union cannot be smaller than the largest set. Think about the lowest common multiple of 10 and 5 - that would be 10.