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Description: Any weak odd Goldbach number is greater than 5. (Contributed by AV, 20-Jul-2020)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | gbowgt5 | ⊢ ( 𝑍 ∈ GoldbachOddW → 5 < 𝑍 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isgbow | ⊢ ( 𝑍 ∈ GoldbachOddW ↔ ( 𝑍 ∈ Odd ∧ ∃ 𝑝 ∈ ℙ ∃ 𝑞 ∈ ℙ ∃ 𝑟 ∈ ℙ 𝑍 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) | |
| 2 | prmuz2 | ⊢ ( 𝑝 ∈ ℙ → 𝑝 ∈ ( ℤ≥ ‘ 2 ) ) | |
| 3 | eluz2 | ⊢ ( 𝑝 ∈ ( ℤ≥ ‘ 2 ) ↔ ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ) | |
| 4 | 2 3 | sylib | ⊢ ( 𝑝 ∈ ℙ → ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ) |
| 5 | prmuz2 | ⊢ ( 𝑞 ∈ ℙ → 𝑞 ∈ ( ℤ≥ ‘ 2 ) ) | |
| 6 | eluz2 | ⊢ ( 𝑞 ∈ ( ℤ≥ ‘ 2 ) ↔ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) | |
| 7 | 5 6 | sylib | ⊢ ( 𝑞 ∈ ℙ → ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) |
| 8 | 4 7 | anim12i | ⊢ ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) → ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) ) |
| 9 | prmuz2 | ⊢ ( 𝑟 ∈ ℙ → 𝑟 ∈ ( ℤ≥ ‘ 2 ) ) | |
| 10 | eluz2 | ⊢ ( 𝑟 ∈ ( ℤ≥ ‘ 2 ) ↔ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) | |
| 11 | 9 10 | sylib | ⊢ ( 𝑟 ∈ ℙ → ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) |
| 12 | zre | ⊢ ( 𝑝 ∈ ℤ → 𝑝 ∈ ℝ ) | |
| 13 | 12 | 3ad2ant2 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) → 𝑝 ∈ ℝ ) |
| 14 | zre | ⊢ ( 𝑞 ∈ ℤ → 𝑞 ∈ ℝ ) | |
| 15 | 14 | 3ad2ant2 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) → 𝑞 ∈ ℝ ) |
| 16 | 13 15 | anim12i | ⊢ ( ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) → ( 𝑝 ∈ ℝ ∧ 𝑞 ∈ ℝ ) ) |
| 17 | 2re | ⊢ 2 ∈ ℝ | |
| 18 | 17 17 | pm3.2i | ⊢ ( 2 ∈ ℝ ∧ 2 ∈ ℝ ) |
| 19 | 16 18 | jctil | ⊢ ( ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) → ( ( 2 ∈ ℝ ∧ 2 ∈ ℝ ) ∧ ( 𝑝 ∈ ℝ ∧ 𝑞 ∈ ℝ ) ) ) |
| 20 | simp3 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) → 2 ≤ 𝑝 ) | |
| 21 | simp3 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) → 2 ≤ 𝑞 ) | |
| 22 | 20 21 | anim12i | ⊢ ( ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) → ( 2 ≤ 𝑝 ∧ 2 ≤ 𝑞 ) ) |
| 23 | le2add | ⊢ ( ( ( 2 ∈ ℝ ∧ 2 ∈ ℝ ) ∧ ( 𝑝 ∈ ℝ ∧ 𝑞 ∈ ℝ ) ) → ( ( 2 ≤ 𝑝 ∧ 2 ≤ 𝑞 ) → ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) ) ) | |
| 24 | 19 22 23 | sylc | ⊢ ( ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) → ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) ) |
| 25 | 2p2e4 | ⊢ ( 2 + 2 ) = 4 | |
| 26 | 25 | breq1i | ⊢ ( ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) ↔ 4 ≤ ( 𝑝 + 𝑞 ) ) |
| 27 | zaddcl | ⊢ ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) → ( 𝑝 + 𝑞 ) ∈ ℤ ) | |
| 28 | 27 | zred | ⊢ ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) → ( 𝑝 + 𝑞 ) ∈ ℝ ) |
| 29 | 28 | adantr | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) → ( 𝑝 + 𝑞 ) ∈ ℝ ) |
| 30 | zre | ⊢ ( 𝑟 ∈ ℤ → 𝑟 ∈ ℝ ) | |
| 31 | 30 | 3ad2ant2 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 𝑟 ∈ ℝ ) |
| 32 | 29 31 | anim12i | ⊢ ( ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) ∧ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) → ( ( 𝑝 + 𝑞 ) ∈ ℝ ∧ 𝑟 ∈ ℝ ) ) |
| 33 | 4re | ⊢ 4 ∈ ℝ | |
| 34 | 33 17 | pm3.2i | ⊢ ( 4 ∈ ℝ ∧ 2 ∈ ℝ ) |
| 35 | 32 34 | jctil | ⊢ ( ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) ∧ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) → ( ( 4 ∈ ℝ ∧ 2 ∈ ℝ ) ∧ ( ( 𝑝 + 𝑞 ) ∈ ℝ ∧ 𝑟 ∈ ℝ ) ) ) |
| 36 | simpr | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) → 4 ≤ ( 𝑝 + 𝑞 ) ) | |
| 37 | simp3 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 2 ≤ 𝑟 ) | |
| 38 | 36 37 | anim12i | ⊢ ( ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) ∧ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) → ( 4 ≤ ( 𝑝 + 𝑞 ) ∧ 2 ≤ 𝑟 ) ) |
| 39 | le2add | ⊢ ( ( ( 4 ∈ ℝ ∧ 2 ∈ ℝ ) ∧ ( ( 𝑝 + 𝑞 ) ∈ ℝ ∧ 𝑟 ∈ ℝ ) ) → ( ( 4 ≤ ( 𝑝 + 𝑞 ) ∧ 2 ≤ 𝑟 ) → ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) | |
| 40 | 35 38 39 | sylc | ⊢ ( ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) ∧ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) → ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) |
| 41 | 4p2e6 | ⊢ ( 4 + 2 ) = 6 | |
| 42 | 41 | breq1i | ⊢ ( ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) ↔ 6 ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) |
| 43 | 5lt6 | ⊢ 5 < 6 | |
| 44 | 5re | ⊢ 5 ∈ ℝ | |
| 45 | 44 | a1i | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → 5 ∈ ℝ ) |
| 46 | 6re | ⊢ 6 ∈ ℝ | |
| 47 | 46 | a1i | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → 6 ∈ ℝ ) |
| 48 | 27 | adantr | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → ( 𝑝 + 𝑞 ) ∈ ℤ ) |
| 49 | simpr | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → 𝑟 ∈ ℤ ) | |
| 50 | 48 49 | zaddcld | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → ( ( 𝑝 + 𝑞 ) + 𝑟 ) ∈ ℤ ) |
| 51 | 50 | zred | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → ( ( 𝑝 + 𝑞 ) + 𝑟 ) ∈ ℝ ) |
| 52 | ltletr | ⊢ ( ( 5 ∈ ℝ ∧ 6 ∈ ℝ ∧ ( ( 𝑝 + 𝑞 ) + 𝑟 ) ∈ ℝ ) → ( ( 5 < 6 ∧ 6 ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) | |
| 53 | 45 47 51 52 | syl3anc | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → ( ( 5 < 6 ∧ 6 ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) |
| 54 | 43 53 | mpani | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → ( 6 ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) |
| 55 | 42 54 | biimtrid | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 𝑟 ∈ ℤ ) → ( ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) |
| 56 | 55 | expcom | ⊢ ( 𝑟 ∈ ℤ → ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) → ( ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) |
| 57 | 56 | 3ad2ant2 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) → ( ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) |
| 58 | 57 | com12 | ⊢ ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → ( ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) |
| 59 | 58 | adantr | ⊢ ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → ( ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) |
| 60 | 59 | imp | ⊢ ( ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) ∧ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) → ( ( 4 + 2 ) ≤ ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) |
| 61 | 40 60 | mpd | ⊢ ( ( ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) ∧ 4 ≤ ( 𝑝 + 𝑞 ) ) ∧ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) |
| 62 | 61 | exp31 | ⊢ ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) → ( 4 ≤ ( 𝑝 + 𝑞 ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) |
| 63 | 26 62 | biimtrid | ⊢ ( ( 𝑝 ∈ ℤ ∧ 𝑞 ∈ ℤ ) → ( ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) |
| 64 | 63 | expcom | ⊢ ( 𝑞 ∈ ℤ → ( 𝑝 ∈ ℤ → ( ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) ) |
| 65 | 64 | 3ad2ant2 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) → ( 𝑝 ∈ ℤ → ( ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) ) |
| 66 | 65 | com12 | ⊢ ( 𝑝 ∈ ℤ → ( ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) → ( ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) ) |
| 67 | 66 | 3ad2ant2 | ⊢ ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) → ( ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) → ( ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) ) |
| 68 | 67 | imp | ⊢ ( ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) → ( ( 2 + 2 ) ≤ ( 𝑝 + 𝑞 ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) ) |
| 69 | 24 68 | mpd | ⊢ ( ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) → ( ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) |
| 70 | 69 | imp | ⊢ ( ( ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) ∧ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) → 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) |
| 71 | breq2 | ⊢ ( 𝑍 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → ( 5 < 𝑍 ↔ 5 < ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) ) | |
| 72 | 70 71 | syl5ibrcom | ⊢ ( ( ( ( 2 ∈ ℤ ∧ 𝑝 ∈ ℤ ∧ 2 ≤ 𝑝 ) ∧ ( 2 ∈ ℤ ∧ 𝑞 ∈ ℤ ∧ 2 ≤ 𝑞 ) ) ∧ ( 2 ∈ ℤ ∧ 𝑟 ∈ ℤ ∧ 2 ≤ 𝑟 ) ) → ( 𝑍 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < 𝑍 ) ) |
| 73 | 8 11 72 | syl2an | ⊢ ( ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ∧ 𝑟 ∈ ℙ ) → ( 𝑍 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < 𝑍 ) ) |
| 74 | 73 | rexlimdva | ⊢ ( ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) → ( ∃ 𝑟 ∈ ℙ 𝑍 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < 𝑍 ) ) |
| 75 | 74 | adantl | ⊢ ( ( 𝑍 ∈ Odd ∧ ( 𝑝 ∈ ℙ ∧ 𝑞 ∈ ℙ ) ) → ( ∃ 𝑟 ∈ ℙ 𝑍 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < 𝑍 ) ) |
| 76 | 75 | rexlimdvva | ⊢ ( 𝑍 ∈ Odd → ( ∃ 𝑝 ∈ ℙ ∃ 𝑞 ∈ ℙ ∃ 𝑟 ∈ ℙ 𝑍 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) → 5 < 𝑍 ) ) |
| 77 | 76 | imp | ⊢ ( ( 𝑍 ∈ Odd ∧ ∃ 𝑝 ∈ ℙ ∃ 𝑞 ∈ ℙ ∃ 𝑟 ∈ ℙ 𝑍 = ( ( 𝑝 + 𝑞 ) + 𝑟 ) ) → 5 < 𝑍 ) |
| 78 | 1 77 | sylbi | ⊢ ( 𝑍 ∈ GoldbachOddW → 5 < 𝑍 ) |