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References to 'Pythagorean triplet'
1. $x^4-y^4=z^2$ has no solutions in positive integers by rm50
2. algebraic number theory by alozano
3. contraharmonic means and Pythagorean hypotenuses by pahio
4. example of Fermat's last theorem by Thomas Heye
5. first primitive Pythagorean triplets by pahio
6. geometric proof of Pythagorean triplet by rm50
7. infinite descent by Thomas Heye
8. proof of Pythagorean triples by fredlb
9. proof of Pythagorean triplet by Thomas Heye
10. Pythagorean n-tuple by Mathprof
11. rational sine and cosine by pahio
12. solutions of $1+x+x^2+x^3=y^2$ by rm50