- #1
rad0786
- 188
- 0
Im kind of lost here can somebody help me out please!
Let S = {a, b, c, d} and let P = { {a}, {b,c}, {d} }. Note that P is a partition of S. Describe the equivalence relation R on S determned by P.
This is a weird question that came out of my textbook.
I know what a set is, and a partition. These are quit simple ideas actually. So what does P = { {a}, {b,c}, {d} } actually mean?
Otherwise, i have no idea how to get started on this - their is no example in the book with this type of question.
"Describe the equivalence relation R on S determned by P." to me means is it either "reflective" "symmetric" or "transitive". But the answer in the back saiys R = {(a,a), (b,b), (c,c), (d,d), (b,c), (c,b)}, but that means nothing to me.
Can somebody help start me off please?
Let S = {a, b, c, d} and let P = { {a}, {b,c}, {d} }. Note that P is a partition of S. Describe the equivalence relation R on S determned by P.
This is a weird question that came out of my textbook.
I know what a set is, and a partition. These are quit simple ideas actually. So what does P = { {a}, {b,c}, {d} } actually mean?
Otherwise, i have no idea how to get started on this - their is no example in the book with this type of question.
"Describe the equivalence relation R on S determned by P." to me means is it either "reflective" "symmetric" or "transitive". But the answer in the back saiys R = {(a,a), (b,b), (c,c), (d,d), (b,c), (c,b)}, but that means nothing to me.
Can somebody help start me off please?