Consider the sets:
A= { n, n ∈ N, n is prime }
B = { p, p ∈ N, perfect square foot }
How many elements are there in A ∩ B?
The answer is 0 but so:
Isn't 1x1 squared and prime? Doesn't 1m² exist? See for me even 0 works is that the mathematic field isn't real but a abstract concept, and in the Univeerse can exits what doesn't exists in Earth, see even Einstein had a theory that the space could be negative.
I study more and mathematic is used for the world but all his concepts are abstract so mathematic and real words fits but aren't the same so 0 exist for mathematic, isn't impossible a 0m² is just no sense for the real world, but mathematics aren't the real, world I think that I read Greek. This is empírico.
Rute Bezerra de Menezes Gondim
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