| 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 18854 | . . . 4 ⊢ (𝑀 ∈ Mnd → 0 ∈ 𝐵) |
| 4 | eqid 2762 | . . . . 5 ⊢ (+g‘𝑀) = (+g‘𝑀) | |
| 5 | cntzun.z | . . . . 5 ⊢ 𝑍 = (Cntz‘𝑀) | |
| 6 | 1, 4, 5 | elcntzsn 19453 | . . . 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 18860 | . . . . . 6 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ 𝐵) → (𝑥(+g‘𝑀) 0 ) = 𝑥) |
| 9 | 1, 4, 2 | mndlid 18859 | . . . . . 6 ⊢ ((𝑀 ∈ Mnd ∧ 𝑥 ∈ 𝐵) → ( 0 (+g‘𝑀)𝑥) = 𝑥) |
| 10 | 8, 9 | eqtr4d 2800 | . . . . 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 2760 | 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 2145 {csn 4587 ‘cfv 6537 (class class class)co 7416 Basecbs 17305 +gcplusg 17346 0gc0g 17528 Mndcmnd 18838 Cntzccntz 19443 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 |
| 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 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7373 df-ov 7419 df-0g 17530 df-mgm 18734 df-sgrp 18823 df-mnd 18839 df-cntz 19445 |
| This theorem is used by: (None) |
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