| Mathbox for Alexander van der Vekens |
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| 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 47710 | . 2 ⊢ 7 ∈ Odd | |
| 2 | 2prm 16590 | . . 3 ⊢ 2 ∈ ℙ | |
| 3 | 3prm 16592 | . . . 4 ⊢ 3 ∈ ℙ | |
| 4 | gbpart7 47765 | . . . 4 ⊢ 7 = ((2 + 2) + 3) | |
| 5 | oveq2 7348 | . . . . 5 ⊢ (𝑟 = 3 → ((2 + 2) + 𝑟) = ((2 + 2) + 3)) | |
| 6 | 5 | rspceeqv 3597 | . . . 4 ⊢ ((3 ∈ ℙ ∧ 7 = ((2 + 2) + 3)) → ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟)) |
| 7 | 3, 4, 6 | mp2an 692 | . . 3 ⊢ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟) |
| 8 | oveq1 7347 | . . . . . . 7 ⊢ (𝑝 = 2 → (𝑝 + 𝑞) = (2 + 𝑞)) | |
| 9 | 8 | oveq1d 7355 | . . . . . 6 ⊢ (𝑝 = 2 → ((𝑝 + 𝑞) + 𝑟) = ((2 + 𝑞) + 𝑟)) |
| 10 | 9 | eqeq2d 2740 | . . . . 5 ⊢ (𝑝 = 2 → (7 = ((𝑝 + 𝑞) + 𝑟) ↔ 7 = ((2 + 𝑞) + 𝑟))) |
| 11 | 10 | rexbidv 3153 | . . . 4 ⊢ (𝑝 = 2 → (∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟) ↔ ∃𝑟 ∈ ℙ 7 = ((2 + 𝑞) + 𝑟))) |
| 12 | oveq2 7348 | . . . . . . 7 ⊢ (𝑞 = 2 → (2 + 𝑞) = (2 + 2)) | |
| 13 | 12 | oveq1d 7355 | . . . . . 6 ⊢ (𝑞 = 2 → ((2 + 𝑞) + 𝑟) = ((2 + 2) + 𝑟)) |
| 14 | 13 | eqeq2d 2740 | . . . . 5 ⊢ (𝑞 = 2 → (7 = ((2 + 𝑞) + 𝑟) ↔ 7 = ((2 + 2) + 𝑟))) |
| 15 | 14 | rexbidv 3153 | . . . 4 ⊢ (𝑞 = 2 → (∃𝑟 ∈ ℙ 7 = ((2 + 𝑞) + 𝑟) ↔ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟))) |
| 16 | 11, 15 | rspc2ev 3587 | . . 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 1463 | . 2 ⊢ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟) |
| 18 | isgbow 47750 | . 2 ⊢ (7 ∈ GoldbachOddW ↔ (7 ∈ Odd ∧ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟))) | |
| 19 | 1, 17, 18 | mpbir2an 711 | 1 ⊢ 7 ∈ GoldbachOddW |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 ∃wrex 3053 (class class class)co 7340 + caddc 11000 2c2 12171 3c3 12172 7c7 12176 ℙcprime 16569 Odd codd 47623 GoldbachOddW cgbow 47744 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5367 ax-un 7662 ax-cnex 11053 ax-resscn 11054 ax-1cn 11055 ax-icn 11056 ax-addcl 11057 ax-addrcl 11058 ax-mulcl 11059 ax-mulrcl 11060 ax-mulcom 11061 ax-addass 11062 ax-mulass 11063 ax-distr 11064 ax-i2m1 11065 ax-1ne0 11066 ax-1rid 11067 ax-rnegex 11068 ax-rrecex 11069 ax-cnre 11070 ax-pre-lttri 11071 ax-pre-lttrn 11072 ax-pre-ltadd 11073 ax-pre-mulgt0 11074 ax-pre-sup 11075 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3343 df-reu 3344 df-rab 3393 df-v 3435 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-iun 4940 df-br 5089 df-opab 5151 df-mpt 5170 df-tr 5196 df-id 5508 df-eprel 5513 df-po 5521 df-so 5522 df-fr 5566 df-we 5568 df-xp 5619 df-rel 5620 df-cnv 5621 df-co 5622 df-dm 5623 df-rn 5624 df-res 5625 df-ima 5626 df-pred 6243 df-ord 6304 df-on 6305 df-lim 6306 df-suc 6307 df-iota 6432 df-fun 6478 df-fn 6479 df-f 6480 df-f1 6481 df-fo 6482 df-f1o 6483 df-fv 6484 df-riota 7297 df-ov 7343 df-oprab 7344 df-mpo 7345 df-om 7791 df-1st 7915 df-2nd 7916 df-frecs 8205 df-wrecs 8236 df-recs 8285 df-rdg 8323 df-1o 8379 df-2o 8380 df-er 8616 df-en 8864 df-dom 8865 df-sdom 8866 df-fin 8867 df-sup 9320 df-pnf 11139 df-mnf 11140 df-xr 11141 df-ltxr 11142 df-le 11143 df-sub 11337 df-neg 11338 df-div 11766 df-nn 12117 df-2 12179 df-3 12180 df-4 12181 df-5 12182 df-6 12183 df-7 12184 df-n0 12373 df-z 12460 df-uz 12724 df-rp 12882 df-fz 13399 df-seq 13897 df-exp 13957 df-cj 14993 df-re 14994 df-im 14995 df-sqrt 15129 df-abs 15130 df-dvds 16151 df-prm 16570 df-even 47624 df-odd 47625 df-gbow 47747 |
| This theorem is referenced by: stgoldbwt 47774 sbgoldbwt 47775 |
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