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Description: If the (weak) ternary Goldbach conjecture is valid, then every odd integer greater than 5 is the sum of 3 primes. (Contributed by AV, 2-Jul-2020)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | nnsum4primesodd | ⊢ ( ∀ 𝑚 ∈ Odd ( 5 < 𝑚 → 𝑚 ∈ GoldbachOddW ) → ( ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) ∧ 𝑁 ∈ Odd ) → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq2 | ⊢ ( 𝑚 = 𝑁 → ( 5 < 𝑚 ↔ 5 < 𝑁 ) ) | |
| 2 | eleq1 | ⊢ ( 𝑚 = 𝑁 → ( 𝑚 ∈ GoldbachOddW ↔ 𝑁 ∈ GoldbachOddW ) ) | |
| 3 | 1 2 | imbi12d | ⊢ ( 𝑚 = 𝑁 → ( ( 5 < 𝑚 → 𝑚 ∈ GoldbachOddW ) ↔ ( 5 < 𝑁 → 𝑁 ∈ GoldbachOddW ) ) ) |
| 4 | 3 | rspcv | ⊢ ( 𝑁 ∈ Odd → ( ∀ 𝑚 ∈ Odd ( 5 < 𝑚 → 𝑚 ∈ GoldbachOddW ) → ( 5 < 𝑁 → 𝑁 ∈ GoldbachOddW ) ) ) |
| 5 | 4 | adantl | ⊢ ( ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) ∧ 𝑁 ∈ Odd ) → ( ∀ 𝑚 ∈ Odd ( 5 < 𝑚 → 𝑚 ∈ GoldbachOddW ) → ( 5 < 𝑁 → 𝑁 ∈ GoldbachOddW ) ) ) |
| 6 | eluz2 | ⊢ ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) ↔ ( 6 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 6 ≤ 𝑁 ) ) | |
| 7 | 5lt6 | ⊢ 5 < 6 | |
| 8 | 5re | ⊢ 5 ∈ ℝ | |
| 9 | 8 | a1i | ⊢ ( 𝑁 ∈ ℤ → 5 ∈ ℝ ) |
| 10 | 6re | ⊢ 6 ∈ ℝ | |
| 11 | 10 | a1i | ⊢ ( 𝑁 ∈ ℤ → 6 ∈ ℝ ) |
| 12 | zre | ⊢ ( 𝑁 ∈ ℤ → 𝑁 ∈ ℝ ) | |
| 13 | ltletr | ⊢ ( ( 5 ∈ ℝ ∧ 6 ∈ ℝ ∧ 𝑁 ∈ ℝ ) → ( ( 5 < 6 ∧ 6 ≤ 𝑁 ) → 5 < 𝑁 ) ) | |
| 14 | 9 11 12 13 | syl3anc | ⊢ ( 𝑁 ∈ ℤ → ( ( 5 < 6 ∧ 6 ≤ 𝑁 ) → 5 < 𝑁 ) ) |
| 15 | 7 14 | mpani | ⊢ ( 𝑁 ∈ ℤ → ( 6 ≤ 𝑁 → 5 < 𝑁 ) ) |
| 16 | 15 | imp | ⊢ ( ( 𝑁 ∈ ℤ ∧ 6 ≤ 𝑁 ) → 5 < 𝑁 ) |
| 17 | 16 | 3adant1 | ⊢ ( ( 6 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 6 ≤ 𝑁 ) → 5 < 𝑁 ) |
| 18 | 6 17 | sylbi | ⊢ ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) → 5 < 𝑁 ) |
| 19 | 18 | adantr | ⊢ ( ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) ∧ 𝑁 ∈ Odd ) → 5 < 𝑁 ) |
| 20 | pm2.27 | ⊢ ( 5 < 𝑁 → ( ( 5 < 𝑁 → 𝑁 ∈ GoldbachOddW ) → 𝑁 ∈ GoldbachOddW ) ) | |
| 21 | 19 20 | syl | ⊢ ( ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) ∧ 𝑁 ∈ Odd ) → ( ( 5 < 𝑁 → 𝑁 ∈ GoldbachOddW ) → 𝑁 ∈ GoldbachOddW ) ) |
| 22 | isgbow | ⊢ ( 𝑁 ∈ GoldbachOddW ↔ ( 𝑁 ∈ Odd ∧ ∃ 𝑝 ∈ ℙ ∃ 𝑞 ∈ ℙ ∃ 𝑟 ∈ ℙ 𝑁 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) | |
| 23 | 1ex | ⊢ 1 ∈ V | |
| 24 | 2ex | ⊢ 2 ∈ V | |
| 25 | 3ex | ⊢ 3 ∈ V | |
| 26 | vex | ⊢ 𝑝 ∈ V | |
| 27 | vex | ⊢ 𝑞 ∈ V | |
| 28 | vex | ⊢ 𝑟 ∈ V | |
| 29 | 1ne2 | ⊢ 1 ≠ 2 | |
| 30 | 1re | ⊢ 1 ∈ ℝ | |
| 31 | 1lt3 | ⊢ 1 < 3 | |
| 32 | 30 31 | ltneii | ⊢ 1 ≠ 3 |
| 33 | 2re | ⊢ 2 ∈ ℝ | |
| 34 | 2lt3 | ⊢ 2 < 3 | |
| 35 | 33 34 | ltneii | ⊢ 2 ≠ 3 |
| 36 | 23 24 25 26 27 28 29 32 35 | ftp | ⊢ { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } : { 1 , 2 , 3 } ⟶ { 𝑝 , 𝑞 , 𝑟 } |
| 37 | 36 | a1i | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } : { 1 , 2 , 3 } ⟶ { 𝑝 , 𝑞 , 𝑟 } ) |
| 38 | 1p2e3 | ⊢ ( 1 + 2 ) = 3 | |
| 39 | 38 | eqcomi | ⊢ 3 = ( 1 + 2 ) |
| 40 | 39 | oveq2i | ⊢ ( 1 ... 3 ) = ( 1 ... ( 1 + 2 ) ) |
| 41 | 1z | ⊢ 1 ∈ ℤ | |
| 42 | fztp | ⊢ ( 1 ∈ ℤ → ( 1 ... ( 1 + 2 ) ) = { 1 , ( 1 + 1 ) , ( 1 + 2 ) } ) | |
| 43 | 41 42 | ax-mp | ⊢ ( 1 ... ( 1 + 2 ) ) = { 1 , ( 1 + 1 ) , ( 1 + 2 ) } |
| 44 | eqid | ⊢ 1 = 1 | |
| 45 | id | ⊢ ( 1 = 1 → 1 = 1 ) | |
| 46 | 1p1e2 | ⊢ ( 1 + 1 ) = 2 | |
| 47 | 46 | a1i | ⊢ ( 1 = 1 → ( 1 + 1 ) = 2 ) |
| 48 | 38 | a1i | ⊢ ( 1 = 1 → ( 1 + 2 ) = 3 ) |
| 49 | 45 47 48 | tpeq123d | ⊢ ( 1 = 1 → { 1 , ( 1 + 1 ) , ( 1 + 2 ) } = { 1 , 2 , 3 } ) |
| 50 | 44 49 | ax-mp | ⊢ { 1 , ( 1 + 1 ) , ( 1 + 2 ) } = { 1 , 2 , 3 } |
| 51 | 40 43 50 | 3eqtri | ⊢ ( 1 ... 3 ) = { 1 , 2 , 3 } |
| 52 | 51 | feq2i | ⊢ ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } : ( 1 ... 3 ) ⟶ { 𝑝 , 𝑞 , 𝑟 } ↔ { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } : { 1 , 2 , 3 } ⟶ { 𝑝 , 𝑞 , 𝑟 } ) |
| 53 | 37 52 | sylibr | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } : ( 1 ... 3 ) ⟶ { 𝑝 , 𝑞 , 𝑟 } ) |
| 54 | df-3an | ⊢ ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ∧ 𝑟 ∈ ℙ ) ↔ ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) ) | |
| 55 | 26 27 28 | tpss | ⊢ ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ∧ 𝑟 ∈ ℙ ) ↔ { 𝑝 , 𝑞 , 𝑟 } ⊆ ℙ ) |
| 56 | 54 55 | sylbb1 | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → { 𝑝 , 𝑞 , 𝑟 } ⊆ ℙ ) |
| 57 | 53 56 | fssd | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } : ( 1 ... 3 ) ⟶ ℙ ) |
| 58 | prmex | ⊢ ℙ ∈ V | |
| 59 | ovex | ⊢ ( 1 ... 3 ) ∈ V | |
| 60 | 58 59 | pm3.2i | ⊢ ( ℙ ∈ V ∧ ( 1 ... 3 ) ∈ V ) |
| 61 | elmapg | ⊢ ( ( ℙ ∈ V ∧ ( 1 ... 3 ) ∈ V ) → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ∈ ( ℙ ↑m ( 1 ... 3 ) ) ↔ { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } : ( 1 ... 3 ) ⟶ ℙ ) ) | |
| 62 | 60 61 | mp1i | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ∈ ( ℙ ↑m ( 1 ... 3 ) ) ↔ { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } : ( 1 ... 3 ) ⟶ ℙ ) ) |
| 63 | 57 62 | mpbird | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ∈ ( ℙ ↑m ( 1 ... 3 ) ) ) |
| 64 | fveq1 | ⊢ ( 𝑓 = { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } → ( 𝑓 ‘ 𝑘 ) = ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) ) | |
| 65 | 64 | sumeq2sdv | ⊢ ( 𝑓 = { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } → Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) ) |
| 66 | 65 | eqeq2d | ⊢ ( 𝑓 = { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } → ( ( ( 𝑝 + 𝑞 ) + 𝑟 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ↔ ( ( 𝑝 + 𝑞 ) + 𝑟 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) ) ) |
| 67 | 66 | adantl | ⊢ ( ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) ∧ 𝑓 = { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ) → ( ( ( 𝑝 + 𝑞 ) + 𝑟 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ↔ ( ( 𝑝 + 𝑞 ) + 𝑟 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) ) ) |
| 68 | 51 | a1i | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → ( 1 ... 3 ) = { 1 , 2 , 3 } ) |
| 69 | 68 | sumeq1d | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → Σ 𝑘 ∈ ( 1 ... 3 ) ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) = Σ 𝑘 ∈ { 1 , 2 , 3 } ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) ) |
| 70 | fveq2 | ⊢ ( 𝑘 = 1 → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) = ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 1 ) ) | |
| 71 | 23 26 | fvtp1 | ⊢ ( ( 1 ≠ 2 ∧ 1 ≠ 3 ) → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 1 ) = 𝑝 ) |
| 72 | 29 32 71 | mp2an | ⊢ ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 1 ) = 𝑝 |
| 73 | 70 72 | eqtrdi | ⊢ ( 𝑘 = 1 → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) = 𝑝 ) |
| 74 | fveq2 | ⊢ ( 𝑘 = 2 → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) = ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 2 ) ) | |
| 75 | 24 27 | fvtp2 | ⊢ ( ( 1 ≠ 2 ∧ 2 ≠ 3 ) → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 2 ) = 𝑞 ) |
| 76 | 29 35 75 | mp2an | ⊢ ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 2 ) = 𝑞 |
| 77 | 74 76 | eqtrdi | ⊢ ( 𝑘 = 2 → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) = 𝑞 ) |
| 78 | fveq2 | ⊢ ( 𝑘 = 3 → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) = ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 3 ) ) | |
| 79 | 25 28 | fvtp3 | ⊢ ( ( 1 ≠ 3 ∧ 2 ≠ 3 ) → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 3 ) = 𝑟 ) |
| 80 | 32 35 79 | mp2an | ⊢ ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 3 ) = 𝑟 |
| 81 | 78 80 | eqtrdi | ⊢ ( 𝑘 = 3 → ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) = 𝑟 ) |
| 82 | prmz | ⊢ ( 𝑝 ∈ ℙ → 𝑝 ∈ ℤ ) | |
| 83 | 82 | zcnd | ⊢ ( 𝑝 ∈ ℙ → 𝑝 ∈ ℂ ) |
| 84 | prmz | ⊢ ( 𝑞 ∈ ℙ → 𝑞 ∈ ℤ ) | |
| 85 | 84 | zcnd | ⊢ ( 𝑞 ∈ ℙ → 𝑞 ∈ ℂ ) |
| 86 | prmz | ⊢ ( 𝑟 ∈ ℙ → 𝑟 ∈ ℤ ) | |
| 87 | 86 | zcnd | ⊢ ( 𝑟 ∈ ℙ → 𝑟 ∈ ℂ ) |
| 88 | 83 85 87 | 3anim123i | ⊢ ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ∧ 𝑟 ∈ ℙ ) → ( 𝑝 ∈ ℂ ∧ 𝑞 ∈ ℂ ∧ 𝑟 ∈ ℂ ) ) |
| 89 | 88 | 3expa | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → ( 𝑝 ∈ ℂ ∧ 𝑞 ∈ ℂ ∧ 𝑟 ∈ ℂ ) ) |
| 90 | 2z | ⊢ 2 ∈ ℤ | |
| 91 | 3z | ⊢ 3 ∈ ℤ | |
| 92 | 41 90 91 | 3pm3.2i | ⊢ ( 1 ∈ ℤ ∧ 2 ∈ ℤ ∧ 3 ∈ ℤ ) |
| 93 | 92 | a1i | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → ( 1 ∈ ℤ ∧ 2 ∈ ℤ ∧ 3 ∈ ℤ ) ) |
| 94 | 29 | a1i | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → 1 ≠ 2 ) |
| 95 | 32 | a1i | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → 1 ≠ 3 ) |
| 96 | 35 | a1i | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → 2 ≠ 3 ) |
| 97 | 73 77 81 89 93 94 95 96 | sumtp | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → Σ 𝑘 ∈ { 1 , 2 , 3 } ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) = ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) |
| 98 | 69 97 | eqtr2d | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → ( ( 𝑝 + 𝑞 ) + 𝑟 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( { 〈 1 , 𝑝 〉 , 〈 2 , 𝑞 〉 , 〈 3 , 𝑟 〉 } ‘ 𝑘 ) ) |
| 99 | 63 67 98 | rspcedvd | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) ( ( 𝑝 + 𝑞 ) + 𝑟 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) |
| 100 | eqeq1 | ⊢ ( 𝑁 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → ( 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ↔ ( ( 𝑝 + 𝑞 ) + 𝑟 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) ) | |
| 101 | 100 | rexbidv | ⊢ ( 𝑁 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → ( ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ↔ ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) ( ( 𝑝 + 𝑞 ) + 𝑟 ) = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) ) |
| 102 | 99 101 | syl5ibrcom | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → ( 𝑁 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) ) |
| 103 | 102 | rexlimdva | ⊢ ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) → ( ∃ 𝑟 ∈ ℙ 𝑁 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) ) |
| 104 | 103 | rexlimivv | ⊢ ( ∃ 𝑝 ∈ ℙ ∃ 𝑞 ∈ ℙ ∃ 𝑟 ∈ ℙ 𝑁 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) |
| 105 | 104 | adantl | ⊢ ( ( 𝑁 ∈ Odd ∧ ∃ 𝑝 ∈ ℙ ∃ 𝑞 ∈ ℙ ∃ 𝑟 ∈ ℙ 𝑁 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) |
| 106 | 22 105 | sylbi | ⊢ ( 𝑁 ∈ GoldbachOddW → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) |
| 107 | 106 | a1i | ⊢ ( ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) ∧ 𝑁 ∈ Odd ) → ( 𝑁 ∈ GoldbachOddW → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) ) |
| 108 | 5 21 107 | 3syld | ⊢ ( ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) ∧ 𝑁 ∈ Odd ) → ( ∀ 𝑚 ∈ Odd ( 5 < 𝑚 → 𝑚 ∈ GoldbachOddW ) → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) ) |
| 109 | 108 | com12 | ⊢ ( ∀ 𝑚 ∈ Odd ( 5 < 𝑚 → 𝑚 ∈ GoldbachOddW ) → ( ( 𝑁 ∈ ( ℤ≥ ‘ 6 ) ∧ 𝑁 ∈ Odd ) → ∃ 𝑓 ∈ ( ℙ ↑m ( 1 ... 3 ) ) 𝑁 = Σ 𝑘 ∈ ( 1 ... 3 ) ( 𝑓 ‘ 𝑘 ) ) ) |