ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  eqsstrdi GIF version

Theorem eqsstrdi 3300
Description: A chained subclass and equality deduction. (Contributed by Mario Carneiro, 2-Jan-2017.)
Hypotheses
Ref Expression
eqsstrdi.1 (𝜑𝐴 = 𝐵)
eqsstrdi.2 𝐵𝐶
Assertion
Ref Expression
eqsstrdi (𝜑𝐴𝐶)

Proof of Theorem eqsstrdi
StepHypRef Expression
1 eqsstrdi.1 . 2 (𝜑𝐴 = 𝐵)
2 eqsstrdi.2 . . 3 𝐵𝐶
32a1i 9 . 2 (𝜑𝐵𝐶)
41, 3eqsstrd 3284 1 (𝜑𝐴𝐶)
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4   = wceq 1402  wss 3220
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-11 1559  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-in 3226  df-ss 3233
This theorem is used by:  eqsstrrdi  3301  resasplitss  5569  fimacnv  5837  suppssdmg  6489  en2other2  7548  exmidfodomrlemim  7553  pw1on  7585  suplocexprlemex  8089  fzowrddc  11419  swrdlend  11430  1arith  13146  ennnfonelemkh  13303  aprap  14598  znf1o  14986  mplbasss  15087  toponsspwpwg  15123  ntrss2  15222  cnprcl2k  15307  reldvg  15780  uhgrspansubgr  16518  trlsex  16628  bj-nntrans  16977  nninfsellemsuc  17055
  Copyright terms: Public domain W3C validator