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Description: Sum of exponents law for integer exponentiation. Proposition 10-4.2(a) of Gleason p. 135. (Contributed by Mario Carneiro, 4-Jun-2014)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | expaddz | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ) ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elznn0nn | ⊢ ( 𝑁 ∈ ℤ ↔ ( 𝑁 ∈ ℕ0 ∨ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) ) | |
| 2 | elznn0nn | ⊢ ( 𝑀 ∈ ℤ ↔ ( 𝑀 ∈ ℕ0 ∨ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ) ) | |
| 3 | expadd | ⊢ ( ( 𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) | |
| 4 | 3 | 3expia | ⊢ ( ( 𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0 ) → ( 𝑁 ∈ ℕ0 → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 5 | 4 | adantlr | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ 𝑀 ∈ ℕ0 ) → ( 𝑁 ∈ ℕ0 → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 6 | expaddzlem | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ 𝑁 ∈ ℕ0 ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) | |
| 7 | 6 | 3expia | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ) → ( 𝑁 ∈ ℕ0 → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 8 | 5 7 | jaodan | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℕ0 ∨ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ) ) → ( 𝑁 ∈ ℕ0 → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 9 | expaddzlem | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → ( 𝐴 ↑ ( 𝑁 + 𝑀 ) ) = ( ( 𝐴 ↑ 𝑁 ) · ( 𝐴 ↑ 𝑀 ) ) ) | |
| 10 | simp3 | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → 𝑀 ∈ ℕ0 ) | |
| 11 | 10 | nn0cnd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → 𝑀 ∈ ℂ ) |
| 12 | simp2l | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → 𝑁 ∈ ℝ ) | |
| 13 | 12 | recnd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → 𝑁 ∈ ℂ ) |
| 14 | 11 13 | addcomd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → ( 𝑀 + 𝑁 ) = ( 𝑁 + 𝑀 ) ) |
| 15 | 14 | oveq2d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( 𝐴 ↑ ( 𝑁 + 𝑀 ) ) ) |
| 16 | simp1l | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → 𝐴 ∈ ℂ ) | |
| 17 | expcl | ⊢ ( ( 𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0 ) → ( 𝐴 ↑ 𝑀 ) ∈ ℂ ) | |
| 18 | 16 10 17 | syl2anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → ( 𝐴 ↑ 𝑀 ) ∈ ℂ ) |
| 19 | simp1r | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → 𝐴 ≠ 0 ) | |
| 20 | 13 | negnegd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → - - 𝑁 = 𝑁 ) |
| 21 | simp2r | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → - 𝑁 ∈ ℕ ) | |
| 22 | 21 | nnnn0d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → - 𝑁 ∈ ℕ0 ) |
| 23 | nn0negz | ⊢ ( - 𝑁 ∈ ℕ0 → - - 𝑁 ∈ ℤ ) | |
| 24 | 22 23 | syl | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → - - 𝑁 ∈ ℤ ) |
| 25 | 20 24 | eqeltrrd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → 𝑁 ∈ ℤ ) |
| 26 | expclz | ⊢ ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ∧ 𝑁 ∈ ℤ ) → ( 𝐴 ↑ 𝑁 ) ∈ ℂ ) | |
| 27 | 16 19 25 26 | syl3anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → ( 𝐴 ↑ 𝑁 ) ∈ ℂ ) |
| 28 | 18 27 | mulcomd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) = ( ( 𝐴 ↑ 𝑁 ) · ( 𝐴 ↑ 𝑀 ) ) ) |
| 29 | 9 15 28 | 3eqtr4d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ∧ 𝑀 ∈ ℕ0 ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) |
| 30 | 29 | 3expia | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝑀 ∈ ℕ0 → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 31 | 30 | impancom | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ 𝑀 ∈ ℕ0 ) → ( ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 32 | simp2l | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → 𝑀 ∈ ℝ ) | |
| 33 | 32 | recnd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → 𝑀 ∈ ℂ ) |
| 34 | simp3l | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → 𝑁 ∈ ℝ ) | |
| 35 | 34 | recnd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → 𝑁 ∈ ℂ ) |
| 36 | 33 35 | negdid | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → - ( 𝑀 + 𝑁 ) = ( - 𝑀 + - 𝑁 ) ) |
| 37 | 36 | oveq2d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ - ( 𝑀 + 𝑁 ) ) = ( 𝐴 ↑ ( - 𝑀 + - 𝑁 ) ) ) |
| 38 | simp1l | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → 𝐴 ∈ ℂ ) | |
| 39 | simp2r | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → - 𝑀 ∈ ℕ ) | |
| 40 | 39 | nnnn0d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → - 𝑀 ∈ ℕ0 ) |
| 41 | simp3r | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → - 𝑁 ∈ ℕ ) | |
| 42 | 41 | nnnn0d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → - 𝑁 ∈ ℕ0 ) |
| 43 | expadd | ⊢ ( ( 𝐴 ∈ ℂ ∧ - 𝑀 ∈ ℕ0 ∧ - 𝑁 ∈ ℕ0 ) → ( 𝐴 ↑ ( - 𝑀 + - 𝑁 ) ) = ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) | |
| 44 | 38 40 42 43 | syl3anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ ( - 𝑀 + - 𝑁 ) ) = ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) |
| 45 | 37 44 | eqtrd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ - ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) |
| 46 | 45 | oveq2d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 1 / ( 𝐴 ↑ - ( 𝑀 + 𝑁 ) ) ) = ( 1 / ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) ) |
| 47 | 1t1e1 | ⊢ ( 1 · 1 ) = 1 | |
| 48 | 47 | oveq1i | ⊢ ( ( 1 · 1 ) / ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) = ( 1 / ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) |
| 49 | 46 48 | eqtr4di | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 1 / ( 𝐴 ↑ - ( 𝑀 + 𝑁 ) ) ) = ( ( 1 · 1 ) / ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) ) |
| 50 | expcl | ⊢ ( ( 𝐴 ∈ ℂ ∧ - 𝑀 ∈ ℕ0 ) → ( 𝐴 ↑ - 𝑀 ) ∈ ℂ ) | |
| 51 | 38 40 50 | syl2anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ - 𝑀 ) ∈ ℂ ) |
| 52 | simp1r | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → 𝐴 ≠ 0 ) | |
| 53 | 40 | nn0zd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → - 𝑀 ∈ ℤ ) |
| 54 | expne0i | ⊢ ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ∧ - 𝑀 ∈ ℤ ) → ( 𝐴 ↑ - 𝑀 ) ≠ 0 ) | |
| 55 | 38 52 53 54 | syl3anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ - 𝑀 ) ≠ 0 ) |
| 56 | expcl | ⊢ ( ( 𝐴 ∈ ℂ ∧ - 𝑁 ∈ ℕ0 ) → ( 𝐴 ↑ - 𝑁 ) ∈ ℂ ) | |
| 57 | 38 42 56 | syl2anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ - 𝑁 ) ∈ ℂ ) |
| 58 | 42 | nn0zd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → - 𝑁 ∈ ℤ ) |
| 59 | expne0i | ⊢ ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ∧ - 𝑁 ∈ ℤ ) → ( 𝐴 ↑ - 𝑁 ) ≠ 0 ) | |
| 60 | 38 52 58 59 | syl3anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ - 𝑁 ) ≠ 0 ) |
| 61 | ax-1cn | ⊢ 1 ∈ ℂ | |
| 62 | divmuldiv | ⊢ ( ( ( 1 ∈ ℂ ∧ 1 ∈ ℂ ) ∧ ( ( ( 𝐴 ↑ - 𝑀 ) ∈ ℂ ∧ ( 𝐴 ↑ - 𝑀 ) ≠ 0 ) ∧ ( ( 𝐴 ↑ - 𝑁 ) ∈ ℂ ∧ ( 𝐴 ↑ - 𝑁 ) ≠ 0 ) ) ) → ( ( 1 / ( 𝐴 ↑ - 𝑀 ) ) · ( 1 / ( 𝐴 ↑ - 𝑁 ) ) ) = ( ( 1 · 1 ) / ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) ) | |
| 63 | 61 61 62 | mpanl12 | ⊢ ( ( ( ( 𝐴 ↑ - 𝑀 ) ∈ ℂ ∧ ( 𝐴 ↑ - 𝑀 ) ≠ 0 ) ∧ ( ( 𝐴 ↑ - 𝑁 ) ∈ ℂ ∧ ( 𝐴 ↑ - 𝑁 ) ≠ 0 ) ) → ( ( 1 / ( 𝐴 ↑ - 𝑀 ) ) · ( 1 / ( 𝐴 ↑ - 𝑁 ) ) ) = ( ( 1 · 1 ) / ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) ) |
| 64 | 51 55 57 60 63 | syl22anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( ( 1 / ( 𝐴 ↑ - 𝑀 ) ) · ( 1 / ( 𝐴 ↑ - 𝑁 ) ) ) = ( ( 1 · 1 ) / ( ( 𝐴 ↑ - 𝑀 ) · ( 𝐴 ↑ - 𝑁 ) ) ) ) |
| 65 | 49 64 | eqtr4d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 1 / ( 𝐴 ↑ - ( 𝑀 + 𝑁 ) ) ) = ( ( 1 / ( 𝐴 ↑ - 𝑀 ) ) · ( 1 / ( 𝐴 ↑ - 𝑁 ) ) ) ) |
| 66 | 33 35 | addcld | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝑀 + 𝑁 ) ∈ ℂ ) |
| 67 | 40 42 | nn0addcld | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( - 𝑀 + - 𝑁 ) ∈ ℕ0 ) |
| 68 | 36 67 | eqeltrd | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → - ( 𝑀 + 𝑁 ) ∈ ℕ0 ) |
| 69 | expneg2 | ⊢ ( ( 𝐴 ∈ ℂ ∧ ( 𝑀 + 𝑁 ) ∈ ℂ ∧ - ( 𝑀 + 𝑁 ) ∈ ℕ0 ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( 1 / ( 𝐴 ↑ - ( 𝑀 + 𝑁 ) ) ) ) | |
| 70 | 38 66 68 69 | syl3anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( 1 / ( 𝐴 ↑ - ( 𝑀 + 𝑁 ) ) ) ) |
| 71 | expneg2 | ⊢ ( ( 𝐴 ∈ ℂ ∧ 𝑀 ∈ ℂ ∧ - 𝑀 ∈ ℕ0 ) → ( 𝐴 ↑ 𝑀 ) = ( 1 / ( 𝐴 ↑ - 𝑀 ) ) ) | |
| 72 | 38 33 40 71 | syl3anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ 𝑀 ) = ( 1 / ( 𝐴 ↑ - 𝑀 ) ) ) |
| 73 | expneg2 | ⊢ ( ( 𝐴 ∈ ℂ ∧ 𝑁 ∈ ℂ ∧ - 𝑁 ∈ ℕ0 ) → ( 𝐴 ↑ 𝑁 ) = ( 1 / ( 𝐴 ↑ - 𝑁 ) ) ) | |
| 74 | 38 35 42 73 | syl3anc | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ 𝑁 ) = ( 1 / ( 𝐴 ↑ - 𝑁 ) ) ) |
| 75 | 72 74 | oveq12d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) = ( ( 1 / ( 𝐴 ↑ - 𝑀 ) ) · ( 1 / ( 𝐴 ↑ - 𝑁 ) ) ) ) |
| 76 | 65 70 75 | 3eqtr4d | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ∧ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) |
| 77 | 76 | 3expia | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ) → ( ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 78 | 31 77 | jaodan | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℕ0 ∨ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ) ) → ( ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 79 | 8 78 | jaod | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℕ0 ∨ ( 𝑀 ∈ ℝ ∧ - 𝑀 ∈ ℕ ) ) ) → ( ( 𝑁 ∈ ℕ0 ∨ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 80 | 2 79 | sylan2b | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ 𝑀 ∈ ℤ ) → ( ( 𝑁 ∈ ℕ0 ∨ ( 𝑁 ∈ ℝ ∧ - 𝑁 ∈ ℕ ) ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 81 | 1 80 | biimtrid | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ 𝑀 ∈ ℤ ) → ( 𝑁 ∈ ℤ → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) ) |
| 82 | 81 | impr | ⊢ ( ( ( 𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ) ∧ ( 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ) ) → ( 𝐴 ↑ ( 𝑀 + 𝑁 ) ) = ( ( 𝐴 ↑ 𝑀 ) · ( 𝐴 ↑ 𝑁 ) ) ) |