11 lines
391 B
Text
11 lines
391 B
Text
module
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open Lean.Grind
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example {α} [CommRing α] [IsCharP α 0] (d t c : α) (d_inv PSO3_inv : α)
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(Δ40 : d^2 * (d + t - d * t - 2) *
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(d + t + d * t) = 0)
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(Δ41 : -d^4 * (d + t - d * t - 2) *
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(2 * d + 2 * d * t - 4 * d * t^2 + 2 * d * t^4 + 2 * d^2 * t^4 - c * (d + t + d * t)) = 0)
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(_ : d * d_inv = 1)
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(_ : (d + t - d * t - 2) * PSO3_inv = 1) :
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t^2 = t + 1 := by grind
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