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| Mirrors > Home > ILE Home > Th. List > sgrpcl | GIF version | ||
| Description: Closure of the operation of a semigroup. (Contributed by AV, 15-Feb-2025.) |
| Ref | Expression |
|---|---|
| sgrpass.b | ⊢ 𝐵 = (Base‘𝐺) |
| sgrpass.o | ⊢ ⚬ = (+g‘𝐺) |
| Ref | Expression |
|---|---|
| sgrpcl | ⊢ ((𝐺 ∈ Smgrp ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ⚬ 𝑌) ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sgrpmgm 13641 | . 2 ⊢ (𝐺 ∈ Smgrp → 𝐺 ∈ Mgm) | |
| 2 | sgrpass.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
| 3 | sgrpass.o | . . 3 ⊢ ⚬ = (+g‘𝐺) | |
| 4 | 2, 3 | mgmcl 13593 | . 2 ⊢ ((𝐺 ∈ Mgm ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ⚬ 𝑌) ∈ 𝐵) |
| 5 | 1, 4 | syl3an1 1307 | 1 ⊢ ((𝐺 ∈ Smgrp ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ⚬ 𝑌) ∈ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ w3a 1005 = wceq 1398 ∈ wcel 2205 ‘cfv 5354 (class class class)co 6052 Basecbs 13233 +gcplusg 13311 Mgmcmgm 13588 Smgrpcsgrp 13635 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4230 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-cnex 8223 ax-resscn 8224 ax-1re 8226 ax-addrcl 8229 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3045 df-un 3217 df-in 3219 df-ss 3226 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-br 4112 df-opab 4174 df-mpt 4175 df-id 4416 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-iota 5314 df-fun 5356 df-fn 5357 df-fv 5362 df-ov 6055 df-inn 9243 df-2 9301 df-ndx 13236 df-slot 13237 df-base 13239 df-plusg 13324 df-mgm 13590 df-sgrp 13636 |
| This theorem is referenced by: sgrppropd 13647 prdsplusgsgrpcl 13648 rngpropd 14120 |
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