SophieMay16
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Is the function N x N to N given by (x,y) ---> x surjective and how would I prove it?
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RDKGames
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(Original post by SophieMay16)
Is the function N x N to N given by (x,y) ---> x surjective and how would I prove it?
Yes it is.

Prove it by showing that its definition is satisfied.
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zetamcfc
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(Original post by RDKGames)
Yes it is.

Prove it by showing that its definition is satisfied.
Love that line.
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RDKGames
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(Original post by zetamcfc)
Love that line.
It is trivial and I leave it as an exercise to the OP.
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SophieMay16
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(Original post by RDKGames)
Yes it is.

Prove it by showing that its definition is satisfied.
Okay thanks
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simon0
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(Original post by RDKGames)
It is trivial and I leave it as an exercise to the OP.
Stop it, you are on a roll.
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davros
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(Original post by RDKGames)
It is trivial and I leave it as an exercise to the OP.
I've found a truly marvellous proof of it, but the webpage is too small to contain it...
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