- #1
aaaa202
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I just want to ask.
For the set {a^2+b^2 , a,b [itex]\in[/itex] Q}. Am i then right in saying that the map:
f(a^2+b^2)=(lal,lbl) is an injection on QxQ (the absolute values are there to make sure f is well-defined)? And is this how you write a thing like this formally.
For the set {a^2+b^2 , a,b [itex]\in[/itex] Q}. Am i then right in saying that the map:
f(a^2+b^2)=(lal,lbl) is an injection on QxQ (the absolute values are there to make sure f is well-defined)? And is this how you write a thing like this formally.