Theorem inindi 3714

Description: Intersection distributes over itself. (Contributed by NM, 6-May-1994.)

Assertion

Ref	Expression
inindi

Proof of Theorem inindi

Step	Hyp	Ref	Expression
1		inidm 3706	. . 3
2	1	ineq1i 3695	. 2
3		in4 3713	. 2
4	2, 3	eqtr3i 2488	1

Syntax hints:  =wceq 1395  i^icin 3474

This theorem is referenced by:  difundi  3749  dfif5  3957  resindi  5294  offres  6795  incexclem  13648  bitsinv1  14092  bitsinvp1  14099  bitsres  14123  fh1  26536

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1618  ax-4 1631  ax-5 1704  ax-6 1747  ax-7 1790  ax-10 1837  ax-11 1842  ax-12 1854  ax-13 1999  ax-ext 2435

This theorem depends on definitions:  df-bi 185  df-an 371  df-tru 1398  df-ex 1613  df-nf 1617  df-sb 1740  df-clab 2443  df-cleq 2449  df-clel 2452  df-nfc 2607  df-v 3111  df-in 3482