Community RSS Feed https://community.wolfram.com RSS Feed for Wolfram Community showing any discussions in tag Symbolic Computations sorted by active Solving Diophantine equation warning: not all solutions https://community.wolfram.com/groups/-/m/t/2627198 Based on the description [here](https://en.wikipedia.org/wiki/Diophantine_equation#Examples): ![enter image description here] I tried to solve the following Diophantine equation but no specific solution has been obtained: In:= Solve[ x^4 + y^4 + z^4 == w^4, {x,y,z,w},Integers] During evaluation of In:= Solve::svars: Equations may not give solutions for all &#034;solve&#034; variables. Out= {{w -&gt; ConditionalExpression[-(x^4 + y^4 + z^4)^( 1/4), (x | y | z | (x^4 + y^4 + z^4)^(1/4)) \[Element] Integers]}, {w -&gt; ConditionalExpression[(x^4 + y^4 + z^4)^( 1/4), (x | y | z | (x^4 + y^4 + z^4)^(1/4)) \[Element] Integers]}} I want to know how to get the results shown in the Wikipedia above. Regards, Zhao : https://community.wolfram.com//c/portal/getImageAttachment?filename=Selection_247.png&amp;userId=2470387 Hongyi Zhao 2022-09-30T14:21:08Z