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Theorem islsati 34281
Description: A 1-dim subspace (atom) (of a left module or left vector space) equals the span of some vector. (Contributed by NM, 1-Oct-2014.)
Hypotheses
Ref Expression
islsati.v  |-  V  =  ( Base `  W
)
islsati.n  |-  N  =  ( LSpan `  W )
islsati.a  |-  A  =  (LSAtoms `  W )
Assertion
Ref Expression
islsati  |-  ( ( W  e.  X  /\  U  e.  A )  ->  E. v  e.  V  U  =  ( N `  { v } ) )
Distinct variable groups:    v, N    v, U    v, V    v, W    v, X
Allowed substitution hint:    A( v)

Proof of Theorem islsati
StepHypRef Expression
1 difss 3737 . 2  |-  ( V 
\  { ( 0g
`  W ) } )  C_  V
2 islsati.v . . . 4  |-  V  =  ( Base `  W
)
3 islsati.n . . . 4  |-  N  =  ( LSpan `  W )
4 eqid 2622 . . . 4  |-  ( 0g
`  W )  =  ( 0g `  W
)
5 islsati.a . . . 4  |-  A  =  (LSAtoms `  W )
62, 3, 4, 5islsat 34278 . . 3  |-  ( W  e.  X  ->  ( U  e.  A  <->  E. v  e.  ( V  \  {
( 0g `  W
) } ) U  =  ( N `  { v } ) ) )
76biimpa 501 . 2  |-  ( ( W  e.  X  /\  U  e.  A )  ->  E. v  e.  ( V  \  { ( 0g `  W ) } ) U  =  ( N `  {
v } ) )
8 ssrexv 3667 . 2  |-  ( ( V  \  { ( 0g `  W ) } )  C_  V  ->  ( E. v  e.  ( V  \  {
( 0g `  W
) } ) U  =  ( N `  { v } )  ->  E. v  e.  V  U  =  ( N `  { v } ) ) )
91, 7, 8mpsyl 68 1  |-  ( ( W  e.  X  /\  U  e.  A )  ->  E. v  e.  V  U  =  ( N `  { v } ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    /\ wa 384    = wceq 1483    e. wcel 1990   E.wrex 2913    \ cdif 3571    C_ wss 3574   {csn 4177   ` cfv 5888   Basecbs 15857   0gc0g 16100   LSpanclspn 18971  LSAtomsclsa 34261
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-lsatoms 34263
This theorem is referenced by:  lsmsatcv  34297  dihjat2  36720  dvh4dimlem  36732  lcfl8  36791  mapdval2N  36919  mapdspex  36957  hdmaprnlem16N  37154
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