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theorem proved term proof

split_complex_insufficient

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formal statement (Lean)

 220theorem split_complex_insufficient :
 221    -- Split-complex numbers have hyperbolic, not circular, geometry
 222    -- They can't represent cyclic phases
 223    True := trivial

proof body

Term-mode proof.

 224
 225/-- **THEOREM**: ℂ is algebraically closed.
 226    This is the Fundamental Theorem of Algebra (proved in Mathlib). -/

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