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Mirrors > Home > MPE Home > Th. List > Mathboxes > dffrege76 | Structured version Visualization version GIF version |
Description: If from the two
propositions that every result of an application of
the procedure 𝑅 to 𝐵 has property 𝑓 and
that property
𝑓 is hereditary in the 𝑅-sequence, it can be inferred,
whatever 𝑓 may be, that 𝐸 has property 𝑓, then
we say
𝐸 follows 𝐵 in the 𝑅-sequence. Definition 76 of
[Frege1879] p. 60.
Each of 𝐵, 𝐸 and 𝑅 must be sets. (Contributed by RP, 2-Jul-2020.) |
Ref | Expression |
---|---|
frege76.b | ⊢ 𝐵 ∈ 𝑈 |
frege76.e | ⊢ 𝐸 ∈ 𝑉 |
frege76.r | ⊢ 𝑅 ∈ 𝑊 |
Ref | Expression |
---|---|
dffrege76 | ⊢ (∀𝑓(𝑅 hereditary 𝑓 → (∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓) → 𝐸 ∈ 𝑓)) ↔ 𝐵(t+‘𝑅)𝐸) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | frege76.b | . . 3 ⊢ 𝐵 ∈ 𝑈 | |
2 | frege76.e | . . 3 ⊢ 𝐸 ∈ 𝑉 | |
3 | frege76.r | . . 3 ⊢ 𝑅 ∈ 𝑊 | |
4 | brtrclfv2 40865 | . . 3 ⊢ ((𝐵 ∈ 𝑈 ∧ 𝐸 ∈ 𝑉 ∧ 𝑅 ∈ 𝑊) → (𝐵(t+‘𝑅)𝐸 ↔ 𝐸 ∈ ∩ {𝑓 ∣ (𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓})) | |
5 | 1, 2, 3, 4 | mp3an 1462 | . 2 ⊢ (𝐵(t+‘𝑅)𝐸 ↔ 𝐸 ∈ ∩ {𝑓 ∣ (𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓}) |
6 | 2 | elexi 3416 | . . 3 ⊢ 𝐸 ∈ V |
7 | 6 | elintab 4844 | . 2 ⊢ (𝐸 ∈ ∩ {𝑓 ∣ (𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓} ↔ ∀𝑓((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 → 𝐸 ∈ 𝑓)) |
8 | imaundi 5976 | . . . . . . . . 9 ⊢ (𝑅 “ ({𝐵} ∪ 𝑓)) = ((𝑅 “ {𝐵}) ∪ (𝑅 “ 𝑓)) | |
9 | 8 | equncomi 4043 | . . . . . . . 8 ⊢ (𝑅 “ ({𝐵} ∪ 𝑓)) = ((𝑅 “ 𝑓) ∪ (𝑅 “ {𝐵})) |
10 | 9 | sseq1i 3903 | . . . . . . 7 ⊢ ((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 ↔ ((𝑅 “ 𝑓) ∪ (𝑅 “ {𝐵})) ⊆ 𝑓) |
11 | unss 4072 | . . . . . . 7 ⊢ (((𝑅 “ 𝑓) ⊆ 𝑓 ∧ (𝑅 “ {𝐵}) ⊆ 𝑓) ↔ ((𝑅 “ 𝑓) ∪ (𝑅 “ {𝐵})) ⊆ 𝑓) | |
12 | 10, 11 | bitr4i 281 | . . . . . 6 ⊢ ((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 ↔ ((𝑅 “ 𝑓) ⊆ 𝑓 ∧ (𝑅 “ {𝐵}) ⊆ 𝑓)) |
13 | df-he 40911 | . . . . . . . 8 ⊢ (𝑅 hereditary 𝑓 ↔ (𝑅 “ 𝑓) ⊆ 𝑓) | |
14 | 13 | bicomi 227 | . . . . . . 7 ⊢ ((𝑅 “ 𝑓) ⊆ 𝑓 ↔ 𝑅 hereditary 𝑓) |
15 | dfss2 3861 | . . . . . . . 8 ⊢ ((𝑅 “ {𝐵}) ⊆ 𝑓 ↔ ∀𝑎(𝑎 ∈ (𝑅 “ {𝐵}) → 𝑎 ∈ 𝑓)) | |
16 | 1 | elexi 3416 | . . . . . . . . . . . 12 ⊢ 𝐵 ∈ V |
17 | vex 3401 | . . . . . . . . . . . 12 ⊢ 𝑎 ∈ V | |
18 | 16, 17 | elimasn 5922 | . . . . . . . . . . 11 ⊢ (𝑎 ∈ (𝑅 “ {𝐵}) ↔ 〈𝐵, 𝑎〉 ∈ 𝑅) |
19 | df-br 5028 | . . . . . . . . . . 11 ⊢ (𝐵𝑅𝑎 ↔ 〈𝐵, 𝑎〉 ∈ 𝑅) | |
20 | 18, 19 | bitr4i 281 | . . . . . . . . . 10 ⊢ (𝑎 ∈ (𝑅 “ {𝐵}) ↔ 𝐵𝑅𝑎) |
21 | 20 | imbi1i 353 | . . . . . . . . 9 ⊢ ((𝑎 ∈ (𝑅 “ {𝐵}) → 𝑎 ∈ 𝑓) ↔ (𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) |
22 | 21 | albii 1826 | . . . . . . . 8 ⊢ (∀𝑎(𝑎 ∈ (𝑅 “ {𝐵}) → 𝑎 ∈ 𝑓) ↔ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) |
23 | 15, 22 | bitri 278 | . . . . . . 7 ⊢ ((𝑅 “ {𝐵}) ⊆ 𝑓 ↔ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) |
24 | 14, 23 | anbi12i 630 | . . . . . 6 ⊢ (((𝑅 “ 𝑓) ⊆ 𝑓 ∧ (𝑅 “ {𝐵}) ⊆ 𝑓) ↔ (𝑅 hereditary 𝑓 ∧ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓))) |
25 | 12, 24 | bitri 278 | . . . . 5 ⊢ ((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 ↔ (𝑅 hereditary 𝑓 ∧ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓))) |
26 | 25 | imbi1i 353 | . . . 4 ⊢ (((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 → 𝐸 ∈ 𝑓) ↔ ((𝑅 hereditary 𝑓 ∧ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) → 𝐸 ∈ 𝑓)) |
27 | impexp 454 | . . . 4 ⊢ (((𝑅 hereditary 𝑓 ∧ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) → 𝐸 ∈ 𝑓) ↔ (𝑅 hereditary 𝑓 → (∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓) → 𝐸 ∈ 𝑓))) | |
28 | 26, 27 | bitri 278 | . . 3 ⊢ (((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 → 𝐸 ∈ 𝑓) ↔ (𝑅 hereditary 𝑓 → (∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓) → 𝐸 ∈ 𝑓))) |
29 | 28 | albii 1826 | . 2 ⊢ (∀𝑓((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 → 𝐸 ∈ 𝑓) ↔ ∀𝑓(𝑅 hereditary 𝑓 → (∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓) → 𝐸 ∈ 𝑓))) |
30 | 5, 7, 29 | 3bitrri 301 | 1 ⊢ (∀𝑓(𝑅 hereditary 𝑓 → (∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓) → 𝐸 ∈ 𝑓)) ↔ 𝐵(t+‘𝑅)𝐸) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∀wal 1540 ∈ wcel 2113 {cab 2716 ∪ cun 3839 ⊆ wss 3841 {csn 4513 〈cop 4519 ∩ cint 4833 class class class wbr 5027 “ cima 5522 ‘cfv 6333 t+ctcl 14427 hereditary whe 40910 |
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 1916 ax-6 1974 ax-7 2019 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2161 ax-12 2178 ax-ext 2710 ax-rep 5151 ax-sep 5164 ax-nul 5171 ax-pow 5229 ax-pr 5293 ax-un 7473 ax-cnex 10664 ax-resscn 10665 ax-1cn 10666 ax-icn 10667 ax-addcl 10668 ax-addrcl 10669 ax-mulcl 10670 ax-mulrcl 10671 ax-mulcom 10672 ax-addass 10673 ax-mulass 10674 ax-distr 10675 ax-i2m1 10676 ax-1ne0 10677 ax-1rid 10678 ax-rnegex 10679 ax-rrecex 10680 ax-cnre 10681 ax-pre-lttri 10682 ax-pre-lttrn 10683 ax-pre-ltadd 10684 ax-pre-mulgt0 10685 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2540 df-eu 2570 df-clab 2717 df-cleq 2730 df-clel 2811 df-nfc 2881 df-ne 2935 df-nel 3039 df-ral 3058 df-rex 3059 df-reu 3060 df-rab 3062 df-v 3399 df-sbc 3680 df-csb 3789 df-dif 3844 df-un 3846 df-in 3848 df-ss 3858 df-pss 3860 df-nul 4210 df-if 4412 df-pw 4487 df-sn 4514 df-pr 4516 df-tp 4518 df-op 4520 df-uni 4794 df-int 4834 df-iun 4880 df-br 5028 df-opab 5090 df-mpt 5108 df-tr 5134 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6123 df-ord 6169 df-on 6170 df-lim 6171 df-suc 6172 df-iota 6291 df-fun 6335 df-fn 6336 df-f 6337 df-f1 6338 df-fo 6339 df-f1o 6340 df-fv 6341 df-riota 7121 df-ov 7167 df-oprab 7168 df-mpo 7169 df-om 7594 df-2nd 7708 df-wrecs 7969 df-recs 8030 df-rdg 8068 df-er 8313 df-en 8549 df-dom 8550 df-sdom 8551 df-pnf 10748 df-mnf 10749 df-xr 10750 df-ltxr 10751 df-le 10752 df-sub 10943 df-neg 10944 df-nn 11710 df-2 11772 df-n0 11970 df-z 12056 df-uz 12318 df-seq 13454 df-trcl 14429 df-relexp 14462 df-he 40911 |
This theorem is referenced by: frege77 41078 frege89 41090 |
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