| Mathbox for Thierry Arnoux |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > cntzsnid | Structured version Visualization version GIF version | ||
| Description: The centralizer of the identity element is the whole base set. (Contributed by Thierry Arnoux, 27-Nov-2023.) |
| Ref | Expression |
|---|---|
| cntzun.b | ⊢ 𝐵 = (Base‘𝑀) |
| cntzun.z | ⊢ 𝑍 = (Cntz‘𝑀) |
| cntzsnid.1 | ⊢ 0 = (0g‘𝑀) |
| Ref | Expression |
|---|---|
| cntzsnid | ⊢ (𝑀 ∈ Mnd → (𝑍‘{ 0 }) = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cntzun.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑀) | |
| 2 | cntzsnid.1 | . . . . 5 ⊢ 0 = (0g‘𝑀) | |
| 3 | 1, 2 | mndidcl 18939 | . . . 4 ⊢ (𝑀 ∈ Mnd → 0 ∈ 𝐵) |
| 4 | eqid 2760 | . . . . 5 ⊢ (+g‘𝑀) = (+g‘𝑀) | |
| 5 | cntzun.z | . . . . 5 ⊢ 𝑍 = (Cntz‘𝑀) | |
| 6 | 1, 4, 5 | elcntzsn 19539 | . . . 4 ⊢ ( 0 ∈ 𝐵 → (𝑥 ∈ (𝑍‘{ 0 }) ↔ (𝑥 ∈ 𝐵 ∧ (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥)))) |
| 7 | 3, 6 | syl 18 | . . 3 ⊢ (𝑀 ∈ Mnd → (𝑥 ∈ (𝑍‘{ 0 }) ↔ (𝑥 ∈ 𝐵 ∧ (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥)))) |
| 8 | 1, 4, 2 | mndrid 18945 | . . . . . 6 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ 𝐵) → (𝑥(+g‘𝑀) 0 ) = 𝑥) |
| 9 | 1, 4, 2 | mndlid 18944 | . . . . . 6 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ 𝐵) → ( 0 (+g‘𝑀)𝑥) = 𝑥) |
| 10 | 8, 9 | eqtr4d 2798 | . . . . 5 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ 𝐵) → (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥)) |
| 11 | 10 | ex 418 | . . . 4 ⊢ (𝑀 ∈ Mnd → (𝑥 ∈ 𝐵 → (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥))) |
| 12 | 11 | pm4.71d 571 | . . 3 ⊢ (𝑀 ∈ Mnd → (𝑥 ∈ 𝐵 ↔ (𝑥 ∈ 𝐵 ∧ (𝑥(+g‘𝑀) 0 ) = ( 0 (+g‘𝑀)𝑥)))) |
| 13 | 7, 12 | bitr4d 285 | . 2 ⊢ (𝑀 ∈ Mnd → (𝑥 ∈ (𝑍‘{ 0 }) ↔ 𝑥 ∈ 𝐵)) |
| 14 | 13 | eqrdv 2758 | 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 1569 ∈ wcel 2144 {csn 4583 ‘cfv 6538 (class class class)co 7420 Basecbs 17387 +gcplusg 17428 0gc0g 17610 Mndcmnd 18923 Cntzccntz 19529 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-0g 17612 df-mgm 18816 df-sgrp 18908 df-mnd 18924 df-cntz 19531 |
| This theorem is used by: (None) |
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