| Mathbox for Alexander van der Vekens |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > 7gbow | Structured version Visualization version GIF version | ||
| Description: 7 is a weak odd Goldbach number. (Contributed by AV, 20-Jul-2020.) |
| Ref | Expression |
|---|---|
| 7gbow | ⊢ 7 ∈ GoldbachOddW |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 7odd 48203 | . 2 ⊢ 7 ∈ Odd | |
| 2 | 2prm 16652 | . . 3 ⊢ 2 ∈ ℙ | |
| 3 | 3prm 16654 | . . . 4 ⊢ 3 ∈ ℙ | |
| 4 | gbpart7 48258 | . . . 4 ⊢ 7 = ((2 + 2) + 3) | |
| 5 | oveq2 7364 | . . . . 5 ⊢ (𝑟 = 3 → ((2 + 2) + 𝑟) = ((2 + 2) + 3)) | |
| 6 | 5 | rspceeqv 3583 | . . . 4 ⊢ ((3 ∈ ℙ ∧ 7 = ((2 + 2) + 3)) → ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟)) |
| 7 | 3, 4, 6 | mp2an 698 | . . 3 ⊢ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟) |
| 8 | oveq1 7363 | . . . . . . 7 ⊢ (𝑝 = 2 → (𝑝 + 𝑞) = (2 + 𝑞)) | |
| 9 | 8 | oveq1d 7371 | . . . . . 6 ⊢ (𝑝 = 2 → ((𝑝 + 𝑞) + 𝑟) = ((2 + 𝑞) + 𝑟)) |
| 10 | 9 | eqeq2d 2750 | . . . . 5 ⊢ (𝑝 = 2 → (7 = ((𝑝 + 𝑞) + 𝑟) ↔ 7 = ((2 + 𝑞) + 𝑟))) |
| 11 | 10 | rexbidv 3163 | . . . 4 ⊢ (𝑝 = 2 → (∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟) ↔ ∃𝑟 ∈ ℙ 7 = ((2 + 𝑞) + 𝑟))) |
| 12 | oveq2 7364 | . . . . . . 7 ⊢ (𝑞 = 2 → (2 + 𝑞) = (2 + 2)) | |
| 13 | 12 | oveq1d 7371 | . . . . . 6 ⊢ (𝑞 = 2 → ((2 + 𝑞) + 𝑟) = ((2 + 2) + 𝑟)) |
| 14 | 13 | eqeq2d 2750 | . . . . 5 ⊢ (𝑞 = 2 → (7 = ((2 + 𝑞) + 𝑟) ↔ 7 = ((2 + 2) + 𝑟))) |
| 15 | 14 | rexbidv 3163 | . . . 4 ⊢ (𝑞 = 2 → (∃𝑟 ∈ ℙ 7 = ((2 + 𝑞) + 𝑟) ↔ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟))) |
| 16 | 11, 15 | rspc2ev 3573 | . . 3 ⊢ ((2 ∈ ℙ ∧ 2 ∈ ℙ ∧ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟)) → ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟)) |
| 17 | 2, 2, 7, 16 | mp3an 1469 | . 2 ⊢ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟) |
| 18 | isgbow 48243 | . 2 ⊢ (7 ∈ GoldbachOddW ↔ (7 ∈ Odd ∧ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟))) | |
| 19 | 1, 17, 18 | mpbir2an 717 | 1 ⊢ 7 ∈ GoldbachOddW |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ∈ wcel 2119 ∃wrex 3063 (class class class)co 7356 + caddc 11032 2c2 12227 3c3 12228 7c7 12232 ℙcprime 16631 Odd codd 48116 GoldbachOddW cgbow 48237 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-2o 8396 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-sup 9345 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-n0 12429 df-z 12516 df-uz 12780 df-rp 12934 df-fz 13453 df-seq 13955 df-exp 14015 df-cj 15052 df-re 15053 df-im 15054 df-sqrt 15188 df-abs 15189 df-dvds 16213 df-prm 16632 df-even 48117 df-odd 48118 df-gbow 48240 |
| This theorem is referenced by: stgoldbwt 48267 sbgoldbwt 48268 |
| Copyright terms: Public domain | W3C validator |