ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  0subm GIF version

Theorem 0subm 13791
Description: The zero submonoid of an arbitrary monoid. (Contributed by AV, 17-Feb-2024.)
Hypothesis
Ref Expression
0subm.z 0 = (0g𝐺)
Assertion
Ref Expression
0subm (𝐺 ∈ Mnd → { 0 } ∈ (SubMnd‘𝐺))

Proof of Theorem 0subm
Dummy variables 𝑎 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2238 . . . 4 (Base‘𝐺) = (Base‘𝐺)
2 0subm.z . . . 4 0 = (0g𝐺)
31, 2mndidcl 13743 . . 3 (𝐺 ∈ Mnd → 0 ∈ (Base‘𝐺))
43snssd 3860 . 2 (𝐺 ∈ Mnd → { 0 } ⊆ (Base‘𝐺))
5 snidg 3738 . . 3 ( 0 ∈ (Base‘𝐺) → 0 ∈ { 0 })
63, 5syl 14 . 2 (𝐺 ∈ Mnd → 0 ∈ { 0 })
7 velsn 3726 . . . . 5 (𝑎 ∈ { 0 } ↔ 𝑎 = 0 )
8 velsn 3726 . . . . 5 (𝑏 ∈ { 0 } ↔ 𝑏 = 0 )
97, 8anbi12i 464 . . . 4 ((𝑎 ∈ { 0 } ∧ 𝑏 ∈ { 0 }) ↔ (𝑎 = 0𝑏 = 0 ))
10 eqid 2238 . . . . . . . 8 (+g𝐺) = (+g𝐺)
111, 10, 2mndlid 13748 . . . . . . 7 ((𝐺 ∈ Mnd ∧ 0 ∈ (Base‘𝐺)) → ( 0 (+g𝐺) 0 ) = 0 )
123, 11mpdan 425 . . . . . 6 (𝐺 ∈ Mnd → ( 0 (+g𝐺) 0 ) = 0 )
1312, 3eqeltrd 2315 . . . . . . 7 (𝐺 ∈ Mnd → ( 0 (+g𝐺) 0 ) ∈ (Base‘𝐺))
14 elsng 3724 . . . . . . 7 (( 0 (+g𝐺) 0 ) ∈ (Base‘𝐺) → (( 0 (+g𝐺) 0 ) ∈ { 0 } ↔ ( 0 (+g𝐺) 0 ) = 0 ))
1513, 14syl 14 . . . . . 6 (𝐺 ∈ Mnd → (( 0 (+g𝐺) 0 ) ∈ { 0 } ↔ ( 0 (+g𝐺) 0 ) = 0 ))
1612, 15mpbird 167 . . . . 5 (𝐺 ∈ Mnd → ( 0 (+g𝐺) 0 ) ∈ { 0 })
17 oveq12 6094 . . . . . 6 ((𝑎 = 0𝑏 = 0 ) → (𝑎(+g𝐺)𝑏) = ( 0 (+g𝐺) 0 ))
1817eleq1d 2307 . . . . 5 ((𝑎 = 0𝑏 = 0 ) → ((𝑎(+g𝐺)𝑏) ∈ { 0 } ↔ ( 0 (+g𝐺) 0 ) ∈ { 0 }))
1916, 18syl5ibrcom 157 . . . 4 (𝐺 ∈ Mnd → ((𝑎 = 0𝑏 = 0 ) → (𝑎(+g𝐺)𝑏) ∈ { 0 }))
209, 19biimtrid 152 . . 3 (𝐺 ∈ Mnd → ((𝑎 ∈ { 0 } ∧ 𝑏 ∈ { 0 }) → (𝑎(+g𝐺)𝑏) ∈ { 0 }))
2120ralrimivv 2631 . 2 (𝐺 ∈ Mnd → ∀𝑎 ∈ { 0 }∀𝑏 ∈ { 0 } (𝑎(+g𝐺)𝑏) ∈ { 0 })
221, 2, 10issubm 13779 . 2 (𝐺 ∈ Mnd → ({ 0 } ∈ (SubMnd‘𝐺) ↔ ({ 0 } ⊆ (Base‘𝐺) ∧ 0 ∈ { 0 } ∧ ∀𝑎 ∈ { 0 }∀𝑏 ∈ { 0 } (𝑎(+g𝐺)𝑏) ∈ { 0 })))
234, 6, 21, 22mpbir3and 1211 1 (𝐺 ∈ Mnd → { 0 } ∈ (SubMnd‘𝐺))
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4  wa 104  wb 105   = wceq 1402  wcel 2209  wral 2528  wss 3220  {csn 3709  cfv 5377  (class class class)co 6085  Basecbs 13352  +gcplusg 13431  0gc0g 13610  Mndcmnd 13729  SubMndcsubmnd 13765
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-cnex 8270  ax-resscn 8271  ax-1re 8273  ax-addrcl 8276
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-reu 2535  df-rmo 2536  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-iota 5337  df-fun 5379  df-fn 5380  df-fv 5385  df-riota 6038  df-ov 6088  df-inn 9305  df-2 9363  df-ndx 13355  df-slot 13356  df-base 13358  df-plusg 13444  df-0g 13612  df-mgm 13676  df-sgrp 13717  df-mnd 13730  df-submnd 13767
This theorem is used by:  0subg  14002
  Copyright terms: Public domain W3C validator