Users' Mathboxes Mathbox for Richard Penner < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  frege91d Structured version   Visualization version   GIF version

Theorem frege91d 44751
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.)
Hypotheses
Ref Expression
frege91d.r (𝜑 → 𝑅 ∈ V)
frege91d.ac (𝜑 → 𝐴𝑅𝐵)
Assertion
Ref Expression
frege91d (𝜑 → 𝐴(t+‘𝑅)𝐵)

Proof of Theorem frege91d
StepHypRef Expression
1 frege91d.ac . 2 (𝜑 → 𝐴𝑅𝐵)
2 frege91d.r . . . 4 (𝜑 → 𝑅 ∈ V)
3 trclfvlb 15161 . . . 4 (𝑅 ∈ V → 𝑅 ⊆ (t+‘𝑅))
42, 3syl 18 . . 3 (𝜑 → 𝑅 ⊆ (t+‘𝑅))
54ssbrd 5147 . 2 (𝜑 → (𝐴𝑅𝐵 → 𝐴(t+‘𝑅)𝐵))
61, 5mpd 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