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Tomita
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Top posts
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answer
7
Finding formula that solves $w^4+x^4=y^4+z^4$ over the integers.
Sep 20, 2021
answer
5
On why solutions to $x^4+y^4+z^4 = 1$ come in pairs
Feb 6
answer
5
finding rational but not integer solutions to $x^2+2y^2=11$
Feb 17, 2020
answer
5
Prove that the expression $(p^2-q^2)^2-4p^2q^2$ cannot be a perfect square
Jun 28, 2021
answer
5
Higher Order Diophantine Equation
Dec 11, 2020
answer
4
Are there more than two rational solutions to a certain system $abcd=a+b+c+d=K$ ($K$ a given constant)?
Jun 4
answer
4
Rational solutions of the system $ p^2-2 q^2 + r^2 =12, 2p^2 - 3 q^2 + s^2=42$?
Dec 20, 2019
answer
4
Generalized 4-variable Diophantine equation
Feb 5
answer
4
On counterexamples to Euler's conjecture using Bremner's and Durman's elliptic curves
Jan 30
answer
4
Still more elliptic curves for $a^4+b^4+c^4=d^4$
Jan 30
Top network posts
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20
Does $A-A=\mathbb Q$ hold for $A=\{x^4+y^4:\ x,y\in\mathbb Q\}$?
14
On the equation $a^4+b^4+c^4=2d^4$ in coprime positive integers $a\lt b\lt c$ such that $a+b\ne c$
14
Triangular numbers of the form $x^4+y^4$
13
Sum of three square is a square and sum of their product taken two at a time is also a square
12
Is it true that $\{x^3-2x+y^3-2y+z^3-2z: x,y,z\in\mathbb Z\}=\mathbb Z$?