Theorem iin0imm 3942

Description: An indexed intersection of the empty set, with an inhabited index set, is empty. (Contributed by Jim Kingdon, 29-Aug-2018.)

Assertion

Ref	Expression
iin0imm	|- ( E. y y e. A -> |^|_ x e. A (/) = (/) )

Distinct variable groups:   y, A   x, A

Proof of Theorem iin0imm

Step	Hyp	Ref	Expression
1		iinconstm 3687	1 |- ( E. y y e. A -> |^|_ x e. A (/) = (/) )

Syntax hints:   -> wi 4   = wceq 1284   E.wex 1421   e. wcel 1433   (/)c0 3251   |^|_ciin 3679

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063

This theorem depends on definitions:  df-bi 115  df-tru 1287  df-nf 1390  df-sb 1686  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-ral 2353  df-v 2603  df-iin 3681

This theorem is referenced by: (None)