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Theorem abvne0 18827
Description: The absolute value of a nonzero number is nonzero. (Contributed by Mario Carneiro, 8-Sep-2014.)
Hypotheses
Ref Expression
abvf.a  |-  A  =  (AbsVal `  R )
abvf.b  |-  B  =  ( Base `  R
)
abveq0.z  |-  .0.  =  ( 0g `  R )
Assertion
Ref Expression
abvne0  |-  ( ( F  e.  A  /\  X  e.  B  /\  X  =/=  .0.  )  -> 
( F `  X
)  =/=  0 )

Proof of Theorem abvne0
StepHypRef Expression
1 abvf.a . . . 4  |-  A  =  (AbsVal `  R )
2 abvf.b . . . 4  |-  B  =  ( Base `  R
)
3 abveq0.z . . . 4  |-  .0.  =  ( 0g `  R )
41, 2, 3abveq0 18826 . . 3  |-  ( ( F  e.  A  /\  X  e.  B )  ->  ( ( F `  X )  =  0  <-> 
X  =  .0.  )
)
54necon3bid 2838 . 2  |-  ( ( F  e.  A  /\  X  e.  B )  ->  ( ( F `  X )  =/=  0  <->  X  =/=  .0.  ) )
65biimp3ar 1433 1  |-  ( ( F  e.  A  /\  X  e.  B  /\  X  =/=  .0.  )  -> 
( F `  X
)  =/=  0 )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    /\ wa 384    /\ w3a 1037    = wceq 1483    e. wcel 1990    =/= wne 2794   ` cfv 5888   0cc0 9936   Basecbs 15857   0gc0g 16100  AbsValcabv 18816
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-8 1992  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-pow 4843  ax-pr 4906  ax-un 6949
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-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-map 7859  df-abv 18817
This theorem is referenced by:  abvgt0  18828  abv1z  18832  abvrec  18836  abvdiv  18837  abvdom  18838
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