I want to show if

|AxB|=|A|

what can we conclude about A and B, and justify it.

I have that

|AxB|=|A|

|A|•|B|=|A|

|B|=|A|/|A|

|B|=1

so the cardinality of B is 1

Is this ok?

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- May 13th 2011, 02:44 PMSneakyhelp with sets and logic
I want to show if

|AxB|=|A|

what can we conclude about A and B, and justify it.

I have that

|AxB|=|A|

|A|•|B|=|A|

|B|=|A|/|A|

|B|=1

so the cardinality of B is 1

Is this ok? - May 13th 2011, 02:56 PMPlato