Theorem 0ima 5482

Description: Image under the empty relation. (Contributed by FL, 11-Jan-2007.)

Assertion

Ref	Expression
0ima	|- ( (/) " A ) = (/)

Proof of Theorem 0ima

Step	Hyp	Ref	Expression
1		imassrn 5477	. . 3 |- ( (/) " A ) C_ ran (/)
2		rn0 5377	. . 3 |- ran (/) = (/)
3	1, 2	sseqtri 3637	. 2 |- ( (/) " A ) C_ (/)
4		0ss 3972	. 2 |- (/) C_ ( (/) " A )
5	3, 4	eqssi 3619	1 |- ( (/) " A ) = (/)

Syntax hints:   = wceq 1483   (/)c0 3915   ran crn 5115   "cima 5117

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-br 4654  df-opab 4713  df-xp 5120  df-cnv 5122  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127

This theorem is referenced by:  csbrn  5596  nghmfval  22526  isnghm  22527  mthmval  31472  ec0  34132  0he  38076  limsup0  39926  0cnf  40090  mbf0  40173