NFE Home New Foundations Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  NFE Home  >  Th. List  >  cnvsi GIF version

Theorem cnvsi 5519
Description: Calculate the converse of a singleton image. (Contributed by SF, 26-Feb-2015.)
Assertion
Ref Expression
cnvsi SI R = SI R

Proof of Theorem cnvsi
Dummy variables a b x y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 3ancoma 941 . . . . 5 ((y = {b} x = {a} bRa) ↔ (x = {a} y = {b} bRa))
2 brcnv 4893 . . . . . 6 (aRbbRa)
323anbi3i 1144 . . . . 5 ((x = {a} y = {b} aRb) ↔ (x = {a} y = {b} bRa))
41, 3bitr4i 243 . . . 4 ((y = {b} x = {a} bRa) ↔ (x = {a} y = {b} aRb))
542exbii 1583 . . 3 (ab(y = {b} x = {a} bRa) ↔ ab(x = {a} y = {b} aRb))
6 brcnv 4893 . . . 4 (x SI Ryy SI Rx)
7 brsi 4762 . . . 4 (y SI Rxba(y = {b} x = {a} bRa))
8 excom 1741 . . . 4 (ba(y = {b} x = {a} bRa) ↔ ab(y = {b} x = {a} bRa))
96, 7, 83bitri 262 . . 3 (x SI Ryab(y = {b} x = {a} bRa))
10 brsi 4762 . . 3 (x SI Ryab(x = {a} y = {b} aRb))
115, 9, 103bitr4i 268 . 2 (x SI Ryx SI Ry)
1211eqbrriv 4852 1 SI R = SI R
Colors of variables: wff setvar class
Syntax hints:   w3a 934  wex 1541   = wceq 1642  {csn 3738   class class class wbr 4640   SI csi 4721  ccnv 4772
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-13 1712  ax-14 1714  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334  ax-nin 4079  ax-xp 4080  ax-cnv 4081  ax-1c 4082  ax-sset 4083  ax-si 4084  ax-ins2 4085  ax-ins3 4086  ax-typlower 4087  ax-sn 4088
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-nan 1288  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-eu 2208  df-mo 2209  df-clab 2340  df-cleq 2346  df-clel 2349  df-nfc 2479  df-ne 2519  df-ral 2620  df-rex 2621  df-reu 2622  df-rmo 2623  df-rab 2624  df-v 2862  df-sbc 3048  df-nin 3212  df-compl 3213  df-in 3214  df-un 3215  df-dif 3216  df-symdif 3217  df-ss 3260  df-pss 3262  df-nul 3552  df-if 3664  df-pw 3725  df-sn 3742  df-pr 3743  df-uni 3893  df-int 3928  df-opk 4059  df-1c 4137  df-pw1 4138  df-uni1 4139  df-xpk 4186  df-cnvk 4187  df-ins2k 4188  df-ins3k 4189  df-imak 4190  df-cok 4191  df-p6 4192  df-sik 4193  df-ssetk 4194  df-imagek 4195  df-idk 4196  df-iota 4340  df-0c 4378  df-addc 4379  df-nnc 4380  df-fin 4381  df-lefin 4441  df-ltfin 4442  df-ncfin 4443  df-tfin 4444  df-evenfin 4445  df-oddfin 4446  df-sfin 4447  df-spfin 4448  df-phi 4566  df-op 4567  df-proj1 4568  df-proj2 4569  df-opab 4624  df-br 4641  df-si 4729  df-cnv 4786
This theorem is referenced by:  rnsi  5522  enpw1  6063
  Copyright terms: Public domain W3C validator