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Theorem cntzsnid 33708
Description: The centralizer of the identity element is the whole base set. (Contributed by Thierry Arnoux, 27-Nov-2023.)
Hypotheses
Ref Expression
cntzun.b 𝐵 = (Base‘𝑀)
cntzun.z 𝑍 = (Cntz‘𝑀)
cntzsnid.1 0 = (0g‘𝑀)
Assertion
Ref Expression
cntzsnid (𝑀 ∈ Mnd → (𝑍‘{ 0 }) = 𝐵)

Proof of Theorem cntzsnid
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 cntzun.b . . . . 5 𝐵 = (Base‘𝑀)
2 cntzsnid.1 . . . . 5 0 = (0g‘𝑀)
31, 2mndidcl 18965 . . . 4 (𝑀 ∈ Mnd → 0 ∈ 𝐵)
4 eqid 2763 . . . . 5 (+g‘𝑀) = (+g‘𝑀)
5 cntzun.z . . . . 5 𝑍 = (Cntz‘𝑀)
61, 4, 5elcntzsn 19566 . . . 4 ( 0 ∈ 𝐵 → (𝑥 ∈ (𝑍‘{ 0 }) ↔ (𝑥 ∈ 𝐵 ∧ (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥))))
73, 6syl 18 . . 3 (𝑀 ∈ Mnd → (𝑥 ∈ (𝑍‘{ 0 }) ↔ (𝑥 ∈ 𝐵 ∧ (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥))))
81, 4, 2mndrid 18971 . . . . . 6 ((𝑀 ∈ Mnd ∧ 𝑥 ∈ 𝐵) → (𝑥(+g‘𝑀) 0 ) = 𝑥)
91, 4, 2mndlid 18970 . . . . . 6 ((𝑀 ∈ Mnd ∧ 𝑥 ∈ 𝐵) → ( 0 (+g‘𝑀)𝑥) = 𝑥)
108, 9eqtr4d 2801 . . . . 5 ((𝑀 ∈ Mnd ∧ 𝑥 ∈ 𝐵) → (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥))
1110ex 418 . . . 4 (𝑀 ∈ Mnd → (𝑥 ∈ 𝐵 → (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥)))
1211pm4.71d 571 . . 3 (𝑀 ∈ Mnd → (𝑥 ∈ 𝐵 ↔ (𝑥 ∈ 𝐵 ∧ (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥))))
137, 12bitr4d 285 . 2 (𝑀 ∈ Mnd → (𝑥 ∈ (𝑍‘{ 0 }) ↔ 𝑥 ∈ 𝐵))
1413eqrdv 2761 1 (𝑀 ∈ Mnd → (𝑍‘{ 0 }) = 𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   = wceq 1570   ∈ wcel 2147  {csn 4588  ‘cfv 6555  (class class class)co 7440  Basecbs 17413  +gcplusg 17454  0gc0g 17636  Mndcmnd 18949  Cntzccntz 19556
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5171  df-mpt 5190  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-iota 6509  df-fun 6557  df-fn 6558  df-f 6559  df-f1 6560  df-fo 6561  df-f1o 6562  df-fv 6563  df-riota 7397  df-ov 7443  df-0g 17638  df-mgm 18842  df-sgrp 18934  df-mnd 18950  df-cntz 19558
This theorem is used by: (None)
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