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lemma proved term proof

modally_equivalent_symm

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formal statement (Lean)

 150lemma modally_equivalent_symm (c1 c2 : Config) :
 151    modally_equivalent c1 c2 ↔ modally_equivalent c2 c1 := by

proof body

Term-mode proof.

 152  simp [modally_equivalent]
 153  constructor <;> (intro ⟨h1, h2, h3⟩; exact ⟨h1.symm, h3, h2⟩)
 154
 155/-- **MODAL NYQUIST THEOREM**: The universe cannot distinguish possibilities
 156    finer than one tick.
 157
 158    This is the modal analog of:
 159    - Nyquist sampling (time)
 160    - Heisenberg uncertainty (phase space)
 161    - Gap-45 consciousness threshold (qualia)
 162
 163    The 8-tick structure forces this limit. -/

depends on (22)

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