HomeHome Metamath Proof Explorer < Previous   Next >
Related theorems
Unicode version

Theorem hbres 3362
Description: Bound-variable hypothesis builder for restriction.
Hypotheses
Ref Expression
hbres.1 |- (y e. A -> A.x y e. A)
hbres.2 |- (y e. B -> A.x y e. B)
Assertion
Ref Expression
hbres |- (y e. (A |` B) -> A.x y e. (A |` B))
Distinct variable groups:   y,A   y,B   x,y

Proof of Theorem hbres
StepHypRef Expression
1 df-res 3185 . 2 |- (A |` B) = (A i^i (B X. V))
2 hbres.1 . . 3 |- (y e. A -> A.x y e. A)
3 hbres.2 . . . 4 |- (y e. B -> A.x y e. B)
4 ax-17 969 . . . 4 |- (y e. V -> A.x y e. V)
53, 4hbxp 3199 . . 3 |- (y e. (B X. V) -> A.x y e. (B X. V))
62, 5hbin 2216 . 2 |- (y e. (A i^i (B X. V)) -> A.x y e. (A i^i (B X. V)))
71, 6hbxfr 1560 1 |- (y e. (A |` B) -> A.x y e. (A |` B))
Colors of variables: wff set class
Syntax hints:   -> wi 3  A.wal 952   e. wcel 956  Vcvv 1807   i^i cin 2042   X. cxp 3163   |` cres 3167
This theorem is referenced by:  frsucopab 3945  unbnn 4527  inf0 4586  trcl 4625  alephfplem2 4877  om2uzsuc 6241  hbsum1 6929  hbsum 6930
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 960  ax-gen 961  ax-8 962  ax-10 964  ax-11 965  ax-12 966  ax-13 967  ax-14 968  ax-17 969  ax-4 971  ax-5o 973  ax-6o 976  ax-9o 1121  ax-10o 1138  ax-16 1208  ax-11o 1216  ax-ext 1457  ax-sep 2698  ax-pow 2737  ax-pr 2774
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-ex 979  df-sb 1170  df-eu 1380  df-mo 1381  df-clab 1462  df-cleq 1467  df-clel 1470  df-ne 1584  df-v 1808  df-dif 2045  df-un 2046  df-in 2047  df-ss 2049  df-nul 2277  df-pw 2398  df-sn 2408  df-pr 2409  df-op 2412  df-opab 2662  df-xp 3179  df-res 3185
Copyright terms: Public domain