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Formel zum Bild "Tschebyschew-verpackte Oktik [Variante I] von Hermann Bauer": [x^4+y^4+z^4+8/3*xyz]*[x^4+y^4+z^4-8/3*xyz]*[(8x^4-8x^2+1)+(8y^4-8y^2+1)+(8z^4-8z^2+1)+1] = 0