Theorem xpindi 4746

Description: Distributive law for cross product over intersection. Theorem 102 of [Suppes] p. 52. (Contributed by NM, 26-Sep-2004.)

Assertion

Ref	Expression
xpindi	|- ( A X. ( B i^i C ) ) = ( ( A X. B ) i^i ( A X. C ) )

Proof of Theorem xpindi

Step	Hyp	Ref	Expression
1		inxp 4745	. 2 |- ( ( A X. B ) i^i ( A X. C ) ) = ( ( A i^i A ) X. ( B i^i C ) )
2		inidm 3336	. . 3 |- ( A i^i A ) = A
3	2	xpeq1i 4631	. 2 |- ( ( A i^i A ) X. ( B i^i C ) ) = ( A X. ( B i^i C ) )
4	1, 3	eqtr2i 2192	1 |- ( A X. ( B i^i C ) ) = ( ( A X. B ) i^i ( A X. C ) )

Syntax hints:   = wceq 1348   i^i cin 3120   X. cxp 4609

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194

This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-rex 2454  df-v 2732  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-opab 4051  df-xp 4617  df-rel 4618

This theorem is referenced by:  xpriindim  4749  djuassen  7194  xpdjuen  7195