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theorem proved term proof

embed_pos

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formal statement (Lean)

 566theorem embed_pos (γ : Generator) (n : LogicNat) : 0 < embed γ n := by

proof body

Term-mode proof.

 567  induction n with
 568  | identity => exact one_pos
 569  | step n ih =>
 570    show 0 < γ.value * embed γ n
 571    exact mul_pos γ.pos ih
 572
 573/-- **Multiplicative homomorphism**: addition in `LogicNat` corresponds
 574to multiplication of orbit elements. This is the structural fact that
 575`LogicNat` *is* the orbit, parameterized by iteration count. -/

depends on (18)

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