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Description: Move multiplication by a natural number inside and outside negation. (Contributed by SN, 25-Jan-2025)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | renegmulnnass.a | ⊢ ( 𝜑 → 𝐴 ∈ ℝ ) | |
| renegmulnnass.n | ⊢ ( 𝜑 → 𝑁 ∈ ℕ ) | ||
| Assertion | renegmulnnass | ⊢ ( 𝜑 → ( ( 0 −ℝ 𝐴 ) · 𝑁 ) = ( 0 −ℝ ( 𝐴 · 𝑁 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | renegmulnnass.a | ⊢ ( 𝜑 → 𝐴 ∈ ℝ ) | |
| 2 | renegmulnnass.n | ⊢ ( 𝜑 → 𝑁 ∈ ℕ ) | |
| 3 | oveq2 | ⊢ ( 𝑥 = 1 → ( ( 0 −ℝ 𝐴 ) · 𝑥 ) = ( ( 0 −ℝ 𝐴 ) · 1 ) ) | |
| 4 | oveq2 | ⊢ ( 𝑥 = 1 → ( 𝐴 · 𝑥 ) = ( 𝐴 · 1 ) ) | |
| 5 | 4 | oveq2d | ⊢ ( 𝑥 = 1 → ( 0 −ℝ ( 𝐴 · 𝑥 ) ) = ( 0 −ℝ ( 𝐴 · 1 ) ) ) |
| 6 | 3 5 | eqeq12d | ⊢ ( 𝑥 = 1 → ( ( ( 0 −ℝ 𝐴 ) · 𝑥 ) = ( 0 −ℝ ( 𝐴 · 𝑥 ) ) ↔ ( ( 0 −ℝ 𝐴 ) · 1 ) = ( 0 −ℝ ( 𝐴 · 1 ) ) ) ) |
| 7 | oveq2 | ⊢ ( 𝑥 = 𝑦 → ( ( 0 −ℝ 𝐴 ) · 𝑥 ) = ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) | |
| 8 | oveq2 | ⊢ ( 𝑥 = 𝑦 → ( 𝐴 · 𝑥 ) = ( 𝐴 · 𝑦 ) ) | |
| 9 | 8 | oveq2d | ⊢ ( 𝑥 = 𝑦 → ( 0 −ℝ ( 𝐴 · 𝑥 ) ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) |
| 10 | 7 9 | eqeq12d | ⊢ ( 𝑥 = 𝑦 → ( ( ( 0 −ℝ 𝐴 ) · 𝑥 ) = ( 0 −ℝ ( 𝐴 · 𝑥 ) ) ↔ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) ) |
| 11 | oveq2 | ⊢ ( 𝑥 = ( 𝑦 + 1 ) → ( ( 0 −ℝ 𝐴 ) · 𝑥 ) = ( ( 0 −ℝ 𝐴 ) · ( 𝑦 + 1 ) ) ) | |
| 12 | oveq2 | ⊢ ( 𝑥 = ( 𝑦 + 1 ) → ( 𝐴 · 𝑥 ) = ( 𝐴 · ( 𝑦 + 1 ) ) ) | |
| 13 | 12 | oveq2d | ⊢ ( 𝑥 = ( 𝑦 + 1 ) → ( 0 −ℝ ( 𝐴 · 𝑥 ) ) = ( 0 −ℝ ( 𝐴 · ( 𝑦 + 1 ) ) ) ) |
| 14 | 11 13 | eqeq12d | ⊢ ( 𝑥 = ( 𝑦 + 1 ) → ( ( ( 0 −ℝ 𝐴 ) · 𝑥 ) = ( 0 −ℝ ( 𝐴 · 𝑥 ) ) ↔ ( ( 0 −ℝ 𝐴 ) · ( 𝑦 + 1 ) ) = ( 0 −ℝ ( 𝐴 · ( 𝑦 + 1 ) ) ) ) ) |
| 15 | oveq2 | ⊢ ( 𝑥 = 𝑁 → ( ( 0 −ℝ 𝐴 ) · 𝑥 ) = ( ( 0 −ℝ 𝐴 ) · 𝑁 ) ) | |
| 16 | oveq2 | ⊢ ( 𝑥 = 𝑁 → ( 𝐴 · 𝑥 ) = ( 𝐴 · 𝑁 ) ) | |
| 17 | 16 | oveq2d | ⊢ ( 𝑥 = 𝑁 → ( 0 −ℝ ( 𝐴 · 𝑥 ) ) = ( 0 −ℝ ( 𝐴 · 𝑁 ) ) ) |
| 18 | 15 17 | eqeq12d | ⊢ ( 𝑥 = 𝑁 → ( ( ( 0 −ℝ 𝐴 ) · 𝑥 ) = ( 0 −ℝ ( 𝐴 · 𝑥 ) ) ↔ ( ( 0 −ℝ 𝐴 ) · 𝑁 ) = ( 0 −ℝ ( 𝐴 · 𝑁 ) ) ) ) |
| 19 | rernegcl | ⊢ ( 𝐴 ∈ ℝ → ( 0 −ℝ 𝐴 ) ∈ ℝ ) | |
| 20 | 1 19 | syl | ⊢ ( 𝜑 → ( 0 −ℝ 𝐴 ) ∈ ℝ ) |
| 21 | ax-1rid | ⊢ ( ( 0 −ℝ 𝐴 ) ∈ ℝ → ( ( 0 −ℝ 𝐴 ) · 1 ) = ( 0 −ℝ 𝐴 ) ) | |
| 22 | 20 21 | syl | ⊢ ( 𝜑 → ( ( 0 −ℝ 𝐴 ) · 1 ) = ( 0 −ℝ 𝐴 ) ) |
| 23 | ax-1rid | ⊢ ( 𝐴 ∈ ℝ → ( 𝐴 · 1 ) = 𝐴 ) | |
| 24 | 1 23 | syl | ⊢ ( 𝜑 → ( 𝐴 · 1 ) = 𝐴 ) |
| 25 | 24 | oveq2d | ⊢ ( 𝜑 → ( 0 −ℝ ( 𝐴 · 1 ) ) = ( 0 −ℝ 𝐴 ) ) |
| 26 | 22 25 | eqtr4d | ⊢ ( 𝜑 → ( ( 0 −ℝ 𝐴 ) · 1 ) = ( 0 −ℝ ( 𝐴 · 1 ) ) ) |
| 27 | simpr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) | |
| 28 | 27 | oveq2d | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ 𝐴 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) = ( ( 0 −ℝ 𝐴 ) + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) ) |
| 29 | 0red | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → 0 ∈ ℝ ) | |
| 30 | 1 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → 𝐴 ∈ ℝ ) |
| 31 | nnre | ⊢ ( 𝑦 ∈ ℕ → 𝑦 ∈ ℝ ) | |
| 32 | 31 | ad2antlr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → 𝑦 ∈ ℝ ) |
| 33 | 30 32 | remulcld | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( 𝐴 · 𝑦 ) ∈ ℝ ) |
| 34 | rernegcl | ⊢ ( ( 𝐴 · 𝑦 ) ∈ ℝ → ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ∈ ℝ ) | |
| 35 | 33 34 | syl | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ∈ ℝ ) |
| 36 | readdsub | ⊢ ( ( 0 ∈ ℝ ∧ ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ∈ ℝ ∧ 𝐴 ∈ ℝ ) → ( ( 0 + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) −ℝ 𝐴 ) = ( ( 0 −ℝ 𝐴 ) + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) ) | |
| 37 | 29 35 30 36 | syl3anc | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) −ℝ 𝐴 ) = ( ( 0 −ℝ 𝐴 ) + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) ) |
| 38 | readdlid | ⊢ ( ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ∈ ℝ → ( 0 + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) | |
| 39 | 35 38 | syl | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( 0 + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) |
| 40 | 39 | oveq1d | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) −ℝ 𝐴 ) = ( ( 0 −ℝ ( 𝐴 · 𝑦 ) ) −ℝ 𝐴 ) ) |
| 41 | 37 40 | eqtr3d | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ 𝐴 ) + ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) = ( ( 0 −ℝ ( 𝐴 · 𝑦 ) ) −ℝ 𝐴 ) ) |
| 42 | resubsub4 | ⊢ ( ( 0 ∈ ℝ ∧ ( 𝐴 · 𝑦 ) ∈ ℝ ∧ 𝐴 ∈ ℝ ) → ( ( 0 −ℝ ( 𝐴 · 𝑦 ) ) −ℝ 𝐴 ) = ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + 𝐴 ) ) ) | |
| 43 | 29 33 30 42 | syl3anc | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ ( 𝐴 · 𝑦 ) ) −ℝ 𝐴 ) = ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + 𝐴 ) ) ) |
| 44 | 28 41 43 | 3eqtrd | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ 𝐴 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) = ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + 𝐴 ) ) ) |
| 45 | 22 | oveq1d | ⊢ ( 𝜑 → ( ( ( 0 −ℝ 𝐴 ) · 1 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) = ( ( 0 −ℝ 𝐴 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) ) |
| 46 | 45 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( ( 0 −ℝ 𝐴 ) · 1 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) = ( ( 0 −ℝ 𝐴 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) ) |
| 47 | 24 | oveq2d | ⊢ ( 𝜑 → ( ( 𝐴 · 𝑦 ) + ( 𝐴 · 1 ) ) = ( ( 𝐴 · 𝑦 ) + 𝐴 ) ) |
| 48 | 47 | oveq2d | ⊢ ( 𝜑 → ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + ( 𝐴 · 1 ) ) ) = ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + 𝐴 ) ) ) |
| 49 | 48 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + ( 𝐴 · 1 ) ) ) = ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + 𝐴 ) ) ) |
| 50 | 44 46 49 | 3eqtr4d | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( ( 0 −ℝ 𝐴 ) · 1 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) = ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + ( 𝐴 · 1 ) ) ) ) |
| 51 | nnadd1com | ⊢ ( 𝑦 ∈ ℕ → ( 𝑦 + 1 ) = ( 1 + 𝑦 ) ) | |
| 52 | 51 | oveq2d | ⊢ ( 𝑦 ∈ ℕ → ( ( 0 −ℝ 𝐴 ) · ( 𝑦 + 1 ) ) = ( ( 0 −ℝ 𝐴 ) · ( 1 + 𝑦 ) ) ) |
| 53 | 52 | ad2antlr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ 𝐴 ) · ( 𝑦 + 1 ) ) = ( ( 0 −ℝ 𝐴 ) · ( 1 + 𝑦 ) ) ) |
| 54 | 20 | recnd | ⊢ ( 𝜑 → ( 0 −ℝ 𝐴 ) ∈ ℂ ) |
| 55 | 54 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( 0 −ℝ 𝐴 ) ∈ ℂ ) |
| 56 | 1cnd | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → 1 ∈ ℂ ) | |
| 57 | nncn | ⊢ ( 𝑦 ∈ ℕ → 𝑦 ∈ ℂ ) | |
| 58 | 57 | ad2antlr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → 𝑦 ∈ ℂ ) |
| 59 | 55 56 58 | adddid | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ 𝐴 ) · ( 1 + 𝑦 ) ) = ( ( ( 0 −ℝ 𝐴 ) · 1 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) ) |
| 60 | 53 59 | eqtrd | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ 𝐴 ) · ( 𝑦 + 1 ) ) = ( ( ( 0 −ℝ 𝐴 ) · 1 ) + ( ( 0 −ℝ 𝐴 ) · 𝑦 ) ) ) |
| 61 | 1 | recnd | ⊢ ( 𝜑 → 𝐴 ∈ ℂ ) |
| 62 | 61 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → 𝐴 ∈ ℂ ) |
| 63 | 62 58 56 | adddid | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( 𝐴 · ( 𝑦 + 1 ) ) = ( ( 𝐴 · 𝑦 ) + ( 𝐴 · 1 ) ) ) |
| 64 | 63 | oveq2d | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( 0 −ℝ ( 𝐴 · ( 𝑦 + 1 ) ) ) = ( 0 −ℝ ( ( 𝐴 · 𝑦 ) + ( 𝐴 · 1 ) ) ) ) |
| 65 | 50 60 64 | 3eqtr4d | ⊢ ( ( ( 𝜑 ∧ 𝑦 ∈ ℕ ) ∧ ( ( 0 −ℝ 𝐴 ) · 𝑦 ) = ( 0 −ℝ ( 𝐴 · 𝑦 ) ) ) → ( ( 0 −ℝ 𝐴 ) · ( 𝑦 + 1 ) ) = ( 0 −ℝ ( 𝐴 · ( 𝑦 + 1 ) ) ) ) |
| 66 | 6 10 14 18 26 65 | nnindd | ⊢ ( ( 𝜑 ∧ 𝑁 ∈ ℕ ) → ( ( 0 −ℝ 𝐴 ) · 𝑁 ) = ( 0 −ℝ ( 𝐴 · 𝑁 ) ) ) |
| 67 | 2 66 | mpdan | ⊢ ( 𝜑 → ( ( 0 −ℝ 𝐴 ) · 𝑁 ) = ( 0 −ℝ ( 𝐴 · 𝑁 ) ) ) |