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 43884 | . 2 ⊢ 7 ∈ Odd | |
2 | 2prm 16038 | . . 3 ⊢ 2 ∈ ℙ | |
3 | 3prm 16040 | . . . 4 ⊢ 3 ∈ ℙ | |
4 | gbpart7 43939 | . . . 4 ⊢ 7 = ((2 + 2) + 3) | |
5 | oveq2 7166 | . . . . 5 ⊢ (𝑟 = 3 → ((2 + 2) + 𝑟) = ((2 + 2) + 3)) | |
6 | 5 | rspceeqv 3640 | . . . 4 ⊢ ((3 ∈ ℙ ∧ 7 = ((2 + 2) + 3)) → ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟)) |
7 | 3, 4, 6 | mp2an 690 | . . 3 ⊢ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟) |
8 | oveq1 7165 | . . . . . . 7 ⊢ (𝑝 = 2 → (𝑝 + 𝑞) = (2 + 𝑞)) | |
9 | 8 | oveq1d 7173 | . . . . . 6 ⊢ (𝑝 = 2 → ((𝑝 + 𝑞) + 𝑟) = ((2 + 𝑞) + 𝑟)) |
10 | 9 | eqeq2d 2834 | . . . . 5 ⊢ (𝑝 = 2 → (7 = ((𝑝 + 𝑞) + 𝑟) ↔ 7 = ((2 + 𝑞) + 𝑟))) |
11 | 10 | rexbidv 3299 | . . . 4 ⊢ (𝑝 = 2 → (∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟) ↔ ∃𝑟 ∈ ℙ 7 = ((2 + 𝑞) + 𝑟))) |
12 | oveq2 7166 | . . . . . . 7 ⊢ (𝑞 = 2 → (2 + 𝑞) = (2 + 2)) | |
13 | 12 | oveq1d 7173 | . . . . . 6 ⊢ (𝑞 = 2 → ((2 + 𝑞) + 𝑟) = ((2 + 2) + 𝑟)) |
14 | 13 | eqeq2d 2834 | . . . . 5 ⊢ (𝑞 = 2 → (7 = ((2 + 𝑞) + 𝑟) ↔ 7 = ((2 + 2) + 𝑟))) |
15 | 14 | rexbidv 3299 | . . . 4 ⊢ (𝑞 = 2 → (∃𝑟 ∈ ℙ 7 = ((2 + 𝑞) + 𝑟) ↔ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟))) |
16 | 11, 15 | rspc2ev 3637 | . . 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 1457 | . 2 ⊢ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟) |
18 | isgbow 43924 | . 2 ⊢ (7 ∈ GoldbachOddW ↔ (7 ∈ Odd ∧ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟))) | |
19 | 1, 17, 18 | mpbir2an 709 | 1 ⊢ 7 ∈ GoldbachOddW |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ∈ wcel 2114 ∃wrex 3141 (class class class)co 7158 + caddc 10542 2c2 11695 3c3 11696 7c7 11700 ℙcprime 16017 Odd codd 43797 GoldbachOddW cgbow 43918 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 ax-pre-mulgt0 10616 ax-pre-sup 10617 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rmo 3148 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-om 7583 df-1st 7691 df-2nd 7692 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-1o 8104 df-2o 8105 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-fin 8515 df-sup 8908 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-div 11300 df-nn 11641 df-2 11703 df-3 11704 df-4 11705 df-5 11706 df-6 11707 df-7 11708 df-n0 11901 df-z 11985 df-uz 12247 df-rp 12393 df-fz 12896 df-seq 13373 df-exp 13433 df-cj 14460 df-re 14461 df-im 14462 df-sqrt 14596 df-abs 14597 df-dvds 15610 df-prm 16018 df-even 43798 df-odd 43799 df-gbow 43921 |
This theorem is referenced by: stgoldbwt 43948 sbgoldbwt 43949 |
Copyright terms: Public domain | W3C validator |