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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 37038 | . . 3 ⊢ ((𝐵 ∈ 𝑈 ∧ 𝐸 ∈ 𝑉 ∧ 𝑅 ∈ 𝑊) → (𝐵(t+‘𝑅)𝐸 ↔ 𝐸 ∈ ∩ {𝑓 ∣ (𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓})) | |
5 | 1, 2, 3, 4 | mp3an 1416 | . 2 ⊢ (𝐵(t+‘𝑅)𝐸 ↔ 𝐸 ∈ ∩ {𝑓 ∣ (𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓}) |
6 | 2 | elexi 3186 | . . 3 ⊢ 𝐸 ∈ V |
7 | 6 | elintab 4422 | . 2 ⊢ (𝐸 ∈ ∩ {𝑓 ∣ (𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓} ↔ ∀𝑓((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 → 𝐸 ∈ 𝑓)) |
8 | imaundi 5464 | . . . . . . . . 9 ⊢ (𝑅 “ ({𝐵} ∪ 𝑓)) = ((𝑅 “ {𝐵}) ∪ (𝑅 “ 𝑓)) | |
9 | 8 | equncomi 3721 | . . . . . . . 8 ⊢ (𝑅 “ ({𝐵} ∪ 𝑓)) = ((𝑅 “ 𝑓) ∪ (𝑅 “ {𝐵})) |
10 | 9 | sseq1i 3592 | . . . . . . 7 ⊢ ((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 ↔ ((𝑅 “ 𝑓) ∪ (𝑅 “ {𝐵})) ⊆ 𝑓) |
11 | unss 3749 | . . . . . . 7 ⊢ (((𝑅 “ 𝑓) ⊆ 𝑓 ∧ (𝑅 “ {𝐵}) ⊆ 𝑓) ↔ ((𝑅 “ 𝑓) ∪ (𝑅 “ {𝐵})) ⊆ 𝑓) | |
12 | 10, 11 | bitr4i 266 | . . . . . 6 ⊢ ((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 ↔ ((𝑅 “ 𝑓) ⊆ 𝑓 ∧ (𝑅 “ {𝐵}) ⊆ 𝑓)) |
13 | df-he 37087 | . . . . . . . 8 ⊢ (𝑅 hereditary 𝑓 ↔ (𝑅 “ 𝑓) ⊆ 𝑓) | |
14 | 13 | bicomi 213 | . . . . . . 7 ⊢ ((𝑅 “ 𝑓) ⊆ 𝑓 ↔ 𝑅 hereditary 𝑓) |
15 | dfss2 3557 | . . . . . . . 8 ⊢ ((𝑅 “ {𝐵}) ⊆ 𝑓 ↔ ∀𝑎(𝑎 ∈ (𝑅 “ {𝐵}) → 𝑎 ∈ 𝑓)) | |
16 | 1 | elexi 3186 | . . . . . . . . . . . 12 ⊢ 𝐵 ∈ V |
17 | vex 3176 | . . . . . . . . . . . 12 ⊢ 𝑎 ∈ V | |
18 | 16, 17 | elimasn 5409 | . . . . . . . . . . 11 ⊢ (𝑎 ∈ (𝑅 “ {𝐵}) ↔ 〈𝐵, 𝑎〉 ∈ 𝑅) |
19 | df-br 4584 | . . . . . . . . . . 11 ⊢ (𝐵𝑅𝑎 ↔ 〈𝐵, 𝑎〉 ∈ 𝑅) | |
20 | 18, 19 | bitr4i 266 | . . . . . . . . . 10 ⊢ (𝑎 ∈ (𝑅 “ {𝐵}) ↔ 𝐵𝑅𝑎) |
21 | 20 | imbi1i 338 | . . . . . . . . 9 ⊢ ((𝑎 ∈ (𝑅 “ {𝐵}) → 𝑎 ∈ 𝑓) ↔ (𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) |
22 | 21 | albii 1737 | . . . . . . . 8 ⊢ (∀𝑎(𝑎 ∈ (𝑅 “ {𝐵}) → 𝑎 ∈ 𝑓) ↔ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) |
23 | 15, 22 | bitri 263 | . . . . . . 7 ⊢ ((𝑅 “ {𝐵}) ⊆ 𝑓 ↔ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) |
24 | 14, 23 | anbi12i 729 | . . . . . 6 ⊢ (((𝑅 “ 𝑓) ⊆ 𝑓 ∧ (𝑅 “ {𝐵}) ⊆ 𝑓) ↔ (𝑅 hereditary 𝑓 ∧ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓))) |
25 | 12, 24 | bitri 263 | . . . . 5 ⊢ ((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 ↔ (𝑅 hereditary 𝑓 ∧ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓))) |
26 | 25 | imbi1i 338 | . . . 4 ⊢ (((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 → 𝐸 ∈ 𝑓) ↔ ((𝑅 hereditary 𝑓 ∧ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) → 𝐸 ∈ 𝑓)) |
27 | impexp 461 | . . . 4 ⊢ (((𝑅 hereditary 𝑓 ∧ ∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓)) → 𝐸 ∈ 𝑓) ↔ (𝑅 hereditary 𝑓 → (∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓) → 𝐸 ∈ 𝑓))) | |
28 | 26, 27 | bitri 263 | . . 3 ⊢ (((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 → 𝐸 ∈ 𝑓) ↔ (𝑅 hereditary 𝑓 → (∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓) → 𝐸 ∈ 𝑓))) |
29 | 28 | albii 1737 | . 2 ⊢ (∀𝑓((𝑅 “ ({𝐵} ∪ 𝑓)) ⊆ 𝑓 → 𝐸 ∈ 𝑓) ↔ ∀𝑓(𝑅 hereditary 𝑓 → (∀𝑎(𝐵𝑅𝑎 → 𝑎 ∈ 𝑓) → 𝐸 ∈ 𝑓))) |
30 | 5, 7, 29 | 3bitrri 286 | 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 195 ∧ wa 383 ∀wal 1473 ∈ wcel 1977 {cab 2596 ∪ cun 3538 ⊆ wss 3540 {csn 4125 〈cop 4131 ∩ cint 4410 class class class wbr 4583 “ cima 5041 ‘cfv 5804 t+ctcl 13572 hereditary whe 37086 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-fal 1481 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-nn 10898 df-2 10956 df-n0 11170 df-z 11255 df-uz 11564 df-seq 12664 df-trcl 13574 df-relexp 13609 df-he 37087 |
This theorem is referenced by: frege77 37254 frege89 37266 |
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