A solution to an undergrad math problem
1
Name:
Anonymous
2011-09-02 18:54
I'm forced to take a set theory....
The homework question: Find two sets A and B such that A is a member of B and A is a subset of B. I talked to my classmates and all the answers seemed a bit strange. The most common answer seemed to be A = {} and B = {{}}. That doesn't really seem right. So here is what I came up with...
A = {7}
B = {{7}, 5, 7}
A is a member of B since {7} is in B.
A is a subset of B since 7 is in B.
2
Name:
Anonymous
2011-09-02 19:05
A and B are both the universal set.
3
Name:
Anonymous
2011-09-02 19:33
You must revolt against the Jews.
4
Name:
Anonymous
2011-09-02 21:22
A = {} and B = {{}} is correct.
Clearly A is a member of B (A is the empty set, and B is a set containing the empty set).
A is also a subset of B, because the empty set is automatically a subset of any set.
Your answer is also correct.
5
Name:
Anonymous
2011-09-02 21:28
A is a member of B forces B = {A,other,stuff,here}
A is a subset of B forces something like A = {other,here}
So (A,B) = ({other,here},{{other,here},other,stuff,here}) would work.
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question is, can you have A = {A,other,here}?
6
Name:
Anonymous
2011-09-02 22:16
7
Name:
Anonymous
2011-09-02 22:47
You're a fucking moron and you're going to fail, you're too stupid for mathematics, try taking up a job at macdonalds or something.
8
Name:
Anonymous
2011-09-03 2:13
You're a fucking genius and you're going to succeed, you're too smart for macdonalds, try taking up a job in mathematics or something.
9
Name:
Anonymous
2011-09-03 9:49
Wouldn't two sets with the same contents satisfy the solution?
10
Name:
Anonymous
2011-09-03 9:55
>>9
No you fucking retard, how can you morons fail at this easy shit?