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theorem proved wrapper

dalembert_cascade

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formal statement (Lean)

 264theorem dalembert_cascade (a b : ℤ) :
 265    Jcost (PhiForcing.φ ^ a * PhiForcing.φ ^ b) +
 266    Jcost (PhiForcing.φ ^ a / PhiForcing.φ ^ b) =
 267    2 * Jcost (PhiForcing.φ ^ a) + 2 * Jcost (PhiForcing.φ ^ b) +
 268    2 * Jcost (PhiForcing.φ ^ a) * Jcost (PhiForcing.φ ^ b) :=

proof body

One-line wrapper that applies dalembert_identity.

 269  dalembert_identity (zpow_pos PhiForcing.phi_pos a) (zpow_pos PhiForcing.phi_pos b)
 270

depends on (1)

Lean names referenced from this declaration's body.