| Mathbox for Richard Penner |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > frege91d | Structured version Visualization version GIF version | ||
| Description: If 𝐵 follows 𝐴 in 𝑅 then 𝐵 follows 𝐴 in the transitive closure of 𝑅. Similar to Proposition 91 of [Frege1879] p. 68. Comparw with frege91 44954. (Contributed by RP, 15-Jul-2020.) |
| Ref | Expression |
|---|---|
| frege91d.r | ⊢ (𝜑 → 𝑅 ∈ V) |
| frege91d.ac | ⊢ (𝜑 → 𝐴𝑅𝐵) |
| Ref | Expression |
|---|---|
| frege91d | ⊢ (𝜑 → 𝐴(t+‘𝑅)𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | frege91d.ac | . 2 ⊢ (𝜑 → 𝐴𝑅𝐵) | |
| 2 | frege91d.r | . . . 4 ⊢ (𝜑 → 𝑅 ∈ V) | |
| 3 | trclfvlb 15161 | . . . 4 ⊢ (𝑅 ∈ V → 𝑅 ⊆ (t+‘𝑅)) | |
| 4 | 2, 3 | syl 18 | . . 3 ⊢ (𝜑 → 𝑅 ⊆ (t+‘𝑅)) |
| 5 | 4 | ssbrd 5147 | . 2 ⊢ (𝜑 → (𝐴𝑅𝐵 → 𝐴(t+‘𝑅)𝐵)) |
| 6 | 1, 5 | mpd 16 | 1 ⊢ (𝜑 → 𝐴(t+‘𝑅)𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 Vcvv 3450 ⊆ wss 3895 class class class wbr 5102 ‘cfv 6538 t+ctcl 15138 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-pow 5326 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-iota 6494 df-fun 6540 df-fv 6546 df-trcl 15140 |
| This theorem is used by: frege102d 44754 frege129d 44763 |
| Copyright terms: Public domain | W3C validator |