To reference or cite the objects present in the Software Heritage archive, permalinks based on SoftWare Hash IDentifiers (SWHIDs) must be used. Select below a type of object currently browsed in order to display its associated SWHID and permalink.
swh:1:cnt:5db382667855fb2c3bd99a03e420ed72a9f1fa0a
swh:1:dir:e41ac7fa94b2e81a1466238527ba014f9fd8bdc7
x^4*y - 2*x^3*y^2 - x^3*y + x^2*y^3 + x^2*y^2 + 2*x^2*y - x^2 - 2*x*y^2 + x*y + y - 1