Theorem 0in 3337

Description: The intersection of the empty set with a class is the empty set. (Contributed by Glauco Siliprandi, 17-Aug-2020.)

Assertion

Ref	Expression
0in	|- ( (/) i^i A ) = (/)

Proof of Theorem 0in

Step	Hyp	Ref	Expression
1		incom 3207	. 2 |- ( (/) i^i A ) = ( A i^i (/) )
2		in0 3336	. 2 |- ( A i^i (/) ) = (/)
3	1, 2	eqtri 2115	1 |- ( (/) i^i A ) = (/)

Syntax hints:   = wceq 1296   i^i cin 3012   (/)c0 3302

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 582  ax-in2 583  ax-io 668  ax-5 1388  ax-7 1389  ax-gen 1390  ax-ie1 1434  ax-ie2 1435  ax-8 1447  ax-10 1448  ax-11 1449  ax-i12 1450  ax-bndl 1451  ax-4 1452  ax-17 1471  ax-i9 1475  ax-ial 1479  ax-i5r 1480  ax-ext 2077

This theorem depends on definitions:  df-bi 116  df-tru 1299  df-nf 1402  df-sb 1700  df-clab 2082  df-cleq 2088  df-clel 2091  df-nfc 2224  df-v 2635  df-dif 3015  df-in 3019  df-nul 3303

This theorem is referenced by:  setsfun  11693  setsfun0  11694  restsn  12047