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| Mirrors > Home > ILE Home > Th. List > 0subm | GIF version | ||
| Description: The zero submonoid of an arbitrary monoid. (Contributed by AV, 17-Feb-2024.) |
| Ref | Expression |
|---|---|
| 0subm.z | ⊢ 0 = (0g‘𝐺) |
| Ref | Expression |
|---|---|
| 0subm | ⊢ (𝐺 ∈ Mnd → { 0 } ∈ (SubMnd‘𝐺)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2231 | . . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 2 | 0subm.z | . . . 4 ⊢ 0 = (0g‘𝐺) | |
| 3 | 1, 2 | mndidcl 13512 | . . 3 ⊢ (𝐺 ∈ Mnd → 0 ∈ (Base‘𝐺)) |
| 4 | 3 | snssd 3818 | . 2 ⊢ (𝐺 ∈ Mnd → { 0 } ⊆ (Base‘𝐺)) |
| 5 | snidg 3698 | . . 3 ⊢ ( 0 ∈ (Base‘𝐺) → 0 ∈ { 0 }) | |
| 6 | 3, 5 | syl 14 | . 2 ⊢ (𝐺 ∈ Mnd → 0 ∈ { 0 }) |
| 7 | velsn 3686 | . . . . 5 ⊢ (𝑎 ∈ { 0 } ↔ 𝑎 = 0 ) | |
| 8 | velsn 3686 | . . . . 5 ⊢ (𝑏 ∈ { 0 } ↔ 𝑏 = 0 ) | |
| 9 | 7, 8 | anbi12i 460 | . . . 4 ⊢ ((𝑎 ∈ { 0 } ∧ 𝑏 ∈ { 0 }) ↔ (𝑎 = 0 ∧ 𝑏 = 0 )) |
| 10 | eqid 2231 | . . . . . . . 8 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 11 | 1, 10, 2 | mndlid 13517 | . . . . . . 7 ⊢ ((𝐺 ∈ Mnd ∧ 0 ∈ (Base‘𝐺)) → ( 0 (+g‘𝐺) 0 ) = 0 ) |
| 12 | 3, 11 | mpdan 421 | . . . . . 6 ⊢ (𝐺 ∈ Mnd → ( 0 (+g‘𝐺) 0 ) = 0 ) |
| 13 | 12, 3 | eqeltrd 2308 | . . . . . . 7 ⊢ (𝐺 ∈ Mnd → ( 0 (+g‘𝐺) 0 ) ∈ (Base‘𝐺)) |
| 14 | elsng 3684 | . . . . . . 7 ⊢ (( 0 (+g‘𝐺) 0 ) ∈ (Base‘𝐺) → (( 0 (+g‘𝐺) 0 ) ∈ { 0 } ↔ ( 0 (+g‘𝐺) 0 ) = 0 )) | |
| 15 | 13, 14 | syl 14 | . . . . . 6 ⊢ (𝐺 ∈ Mnd → (( 0 (+g‘𝐺) 0 ) ∈ { 0 } ↔ ( 0 (+g‘𝐺) 0 ) = 0 )) |
| 16 | 12, 15 | mpbird 167 | . . . . 5 ⊢ (𝐺 ∈ Mnd → ( 0 (+g‘𝐺) 0 ) ∈ { 0 }) |
| 17 | oveq12 6026 | . . . . . 6 ⊢ ((𝑎 = 0 ∧ 𝑏 = 0 ) → (𝑎(+g‘𝐺)𝑏) = ( 0 (+g‘𝐺) 0 )) | |
| 18 | 17 | eleq1d 2300 | . . . . 5 ⊢ ((𝑎 = 0 ∧ 𝑏 = 0 ) → ((𝑎(+g‘𝐺)𝑏) ∈ { 0 } ↔ ( 0 (+g‘𝐺) 0 ) ∈ { 0 })) |
| 19 | 16, 18 | syl5ibrcom 157 | . . . 4 ⊢ (𝐺 ∈ Mnd → ((𝑎 = 0 ∧ 𝑏 = 0 ) → (𝑎(+g‘𝐺)𝑏) ∈ { 0 })) |
| 20 | 9, 19 | biimtrid 152 | . . 3 ⊢ (𝐺 ∈ Mnd → ((𝑎 ∈ { 0 } ∧ 𝑏 ∈ { 0 }) → (𝑎(+g‘𝐺)𝑏) ∈ { 0 })) |
| 21 | 20 | ralrimivv 2613 | . 2 ⊢ (𝐺 ∈ Mnd → ∀𝑎 ∈ { 0 }∀𝑏 ∈ { 0 } (𝑎(+g‘𝐺)𝑏) ∈ { 0 }) |
| 22 | 1, 2, 10 | issubm 13554 | . 2 ⊢ (𝐺 ∈ Mnd → ({ 0 } ∈ (SubMnd‘𝐺) ↔ ({ 0 } ⊆ (Base‘𝐺) ∧ 0 ∈ { 0 } ∧ ∀𝑎 ∈ { 0 }∀𝑏 ∈ { 0 } (𝑎(+g‘𝐺)𝑏) ∈ { 0 }))) |
| 23 | 4, 6, 21, 22 | mpbir3and 1206 | 1 ⊢ (𝐺 ∈ Mnd → { 0 } ∈ (SubMnd‘𝐺)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1397 ∈ wcel 2202 ∀wral 2510 ⊆ wss 3200 {csn 3669 ‘cfv 5326 (class class class)co 6017 Basecbs 13081 +gcplusg 13159 0gc0g 13338 Mndcmnd 13498 SubMndcsubmnd 13540 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-cnex 8122 ax-resscn 8123 ax-1re 8125 ax-addrcl 8128 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-reu 2517 df-rmo 2518 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-iota 5286 df-fun 5328 df-fn 5329 df-fv 5334 df-riota 5970 df-ov 6020 df-inn 9143 df-2 9201 df-ndx 13084 df-slot 13085 df-base 13087 df-plusg 13172 df-0g 13340 df-mgm 13438 df-sgrp 13484 df-mnd 13499 df-submnd 13542 |
| This theorem is referenced by: 0subg 13785 |
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