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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 41621 | . 2 ⊢ 7 ∈ Odd | |
2 | 2prm 15405 | . . 3 ⊢ 2 ∈ ℙ | |
3 | 3prm 15406 | . . . 4 ⊢ 3 ∈ ℙ | |
4 | gbpart7 41655 | . . . 4 ⊢ 7 = ((2 + 2) + 3) | |
5 | oveq2 6658 | . . . . . 6 ⊢ (𝑟 = 3 → ((2 + 2) + 𝑟) = ((2 + 2) + 3)) | |
6 | 5 | eqeq2d 2632 | . . . . 5 ⊢ (𝑟 = 3 → (7 = ((2 + 2) + 𝑟) ↔ 7 = ((2 + 2) + 3))) |
7 | 6 | rspcev 3309 | . . . 4 ⊢ ((3 ∈ ℙ ∧ 7 = ((2 + 2) + 3)) → ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟)) |
8 | 3, 4, 7 | mp2an 708 | . . 3 ⊢ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟) |
9 | oveq1 6657 | . . . . . . 7 ⊢ (𝑝 = 2 → (𝑝 + 𝑞) = (2 + 𝑞)) | |
10 | 9 | oveq1d 6665 | . . . . . 6 ⊢ (𝑝 = 2 → ((𝑝 + 𝑞) + 𝑟) = ((2 + 𝑞) + 𝑟)) |
11 | 10 | eqeq2d 2632 | . . . . 5 ⊢ (𝑝 = 2 → (7 = ((𝑝 + 𝑞) + 𝑟) ↔ 7 = ((2 + 𝑞) + 𝑟))) |
12 | 11 | rexbidv 3052 | . . . 4 ⊢ (𝑝 = 2 → (∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟) ↔ ∃𝑟 ∈ ℙ 7 = ((2 + 𝑞) + 𝑟))) |
13 | oveq2 6658 | . . . . . . 7 ⊢ (𝑞 = 2 → (2 + 𝑞) = (2 + 2)) | |
14 | 13 | oveq1d 6665 | . . . . . 6 ⊢ (𝑞 = 2 → ((2 + 𝑞) + 𝑟) = ((2 + 2) + 𝑟)) |
15 | 14 | eqeq2d 2632 | . . . . 5 ⊢ (𝑞 = 2 → (7 = ((2 + 𝑞) + 𝑟) ↔ 7 = ((2 + 2) + 𝑟))) |
16 | 15 | rexbidv 3052 | . . . 4 ⊢ (𝑞 = 2 → (∃𝑟 ∈ ℙ 7 = ((2 + 𝑞) + 𝑟) ↔ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟))) |
17 | 12, 16 | rspc2ev 3324 | . . 3 ⊢ ((2 ∈ ℙ ∧ 2 ∈ ℙ ∧ ∃𝑟 ∈ ℙ 7 = ((2 + 2) + 𝑟)) → ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟)) |
18 | 2, 2, 8, 17 | mp3an 1424 | . 2 ⊢ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟) |
19 | isgbow 41640 | . 2 ⊢ (7 ∈ GoldbachOddW ↔ (7 ∈ Odd ∧ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 7 = ((𝑝 + 𝑞) + 𝑟))) | |
20 | 1, 18, 19 | mpbir2an 955 | 1 ⊢ 7 ∈ GoldbachOddW |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1483 ∈ wcel 1990 ∃wrex 2913 (class class class)co 6650 + caddc 9939 2c2 11070 3c3 11071 7c7 11075 ℙcprime 15385 Odd codd 41538 GoldbachOddW cgbow 41634 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-cnex 9992 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013 ax-pre-sup 10014 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-1st 7168 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-1o 7560 df-2o 7561 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-fin 7959 df-sup 8348 df-inf 8349 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-div 10685 df-nn 11021 df-2 11079 df-3 11080 df-4 11081 df-5 11082 df-6 11083 df-7 11084 df-n0 11293 df-z 11378 df-uz 11688 df-rp 11833 df-fz 12327 df-seq 12802 df-exp 12861 df-cj 13839 df-re 13840 df-im 13841 df-sqrt 13975 df-abs 13976 df-dvds 14984 df-prm 15386 df-even 41539 df-odd 41540 df-gbow 41637 |
This theorem is referenced by: stgoldbwt 41664 sbgoldbwt 41665 |
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