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+1 vote
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Ans. C

in Mathematical Logic by Loyal (6.7k points) | 98 views
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Because it is partial ordering relation, because it is Reflexive, antisymmetric and transitive.
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say for (2,4) how it will be antisymmetric?
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Because we can't find any pair (4,2)
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2R4=2 which is one among the domain.

But 4R2=.5 which is not in the domain.
So it's antisymmetric.
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4R2 not 4??
+1
no mam here in the question they have mentioned that n is a +ve integer. and a is divisor of b. but 4 is not divisor of 2.
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yes, it is a chain

every 2 element has a LUB and a GLB, that is why it is lattice

but it no lower bound bound and no upper bound

So, it is not bounded

that means the lattice has  LUB but no upper bound

And can u tell me is it complemented lattice or not?

I think it is complemented lattice too
+1
its not a complemented lattice as to be complemented it has to satisfy two properties:
1)it should be bounded
2)it should have atleast one complement for each element.
but it fails on both the criteria so its not a complemented lattice.
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Statement should be "it should have atleast one complement for every element"
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yes :p updated

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