in Set Theory & Algebra closed by
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closed with the note: Bad question

in Set Theory & Algebra closed by
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4 Comments

Then a should also be correct?
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No,

If you see in Lattice LUB(a,b) = c.

But when you form the sub-lattice of { x,a,b,y} then here LUB(a,b) = y.

So, NOT equal.
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Got it..thanks
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