Recent content by a.katerina

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    Undergrad Proving If Two Integers Don't Divide by 3: A Number Theory Challenge

    Thank you very much for the help! I'm grateful to you!
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    Undergrad Proving If Two Integers Don't Divide by 3: A Number Theory Challenge

    what?? Can you explain it a little bit, please?
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    Undergrad Proving If Two Integers Don't Divide by 3: A Number Theory Challenge

    Hi, i have just registered to the forum, because this time i study number theory and in some problems i can't figure out how to solve them. This time i have to prove: If two integers x,y doesn't divided with 3 then the (x^2 - y^2) always is divided with 3. Does anyone has a clue how to...