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Mirrors > Home > MPE Home > Th. List > symgpssefmnd | Structured version Visualization version GIF version |
Description: For a set 𝐴 with more than one element, the symmetric group on 𝐴 is a proper subset of the monoid of endofunctions on 𝐴. (Contributed by AV, 31-Mar-2024.) |
Ref | Expression |
---|---|
symgpssefmnd.m | ⊢ 𝑀 = (EndoFMnd‘𝐴) |
symgpssefmnd.g | ⊢ 𝐺 = (SymGrp‘𝐴) |
Ref | Expression |
---|---|
symgpssefmnd | ⊢ ((𝐴 ∈ 𝑉 ∧ 1 < (♯‘𝐴)) → (Base‘𝐺) ⊊ (Base‘𝑀)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hashgt12el 14417 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 1 < (♯‘𝐴)) → ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐴 𝑥 ≠ 𝑦) | |
2 | symgpssefmnd.g | . . . . . . . . . 10 ⊢ 𝐺 = (SymGrp‘𝐴) | |
3 | eqid 2725 | . . . . . . . . . 10 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
4 | 2, 3 | symgbasmap 19343 | . . . . . . . . 9 ⊢ (𝑥 ∈ (Base‘𝐺) → 𝑥 ∈ (𝐴 ↑m 𝐴)) |
5 | symgpssefmnd.m | . . . . . . . . . 10 ⊢ 𝑀 = (EndoFMnd‘𝐴) | |
6 | eqid 2725 | . . . . . . . . . 10 ⊢ (Base‘𝑀) = (Base‘𝑀) | |
7 | 5, 6 | efmndbas 18831 | . . . . . . . . 9 ⊢ (Base‘𝑀) = (𝐴 ↑m 𝐴) |
8 | 4, 7 | eleqtrrdi 2836 | . . . . . . . 8 ⊢ (𝑥 ∈ (Base‘𝐺) → 𝑥 ∈ (Base‘𝑀)) |
9 | 8 | ssriv 3980 | . . . . . . 7 ⊢ (Base‘𝐺) ⊆ (Base‘𝑀) |
10 | 9 | a1i 11 | . . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (Base‘𝐺) ⊆ (Base‘𝑀)) |
11 | fconst6g 6786 | . . . . . . . . 9 ⊢ (𝑥 ∈ 𝐴 → (𝐴 × {𝑥}):𝐴⟶𝐴) | |
12 | 11 | adantr 479 | . . . . . . . 8 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐴 × {𝑥}):𝐴⟶𝐴) |
13 | 12 | 3ad2ant2 1131 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝐴 × {𝑥}):𝐴⟶𝐴) |
14 | 5, 6 | elefmndbas 18833 | . . . . . . . 8 ⊢ (𝐴 ∈ 𝑉 → ((𝐴 × {𝑥}) ∈ (Base‘𝑀) ↔ (𝐴 × {𝑥}):𝐴⟶𝐴)) |
15 | 14 | 3ad2ant1 1130 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → ((𝐴 × {𝑥}) ∈ (Base‘𝑀) ↔ (𝐴 × {𝑥}):𝐴⟶𝐴)) |
16 | 13, 15 | mpbird 256 | . . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝐴 × {𝑥}) ∈ (Base‘𝑀)) |
17 | fconstg 6784 | . . . . . . . . . 10 ⊢ (𝑥 ∈ 𝐴 → (𝐴 × {𝑥}):𝐴⟶{𝑥}) | |
18 | 17 | adantr 479 | . . . . . . . . 9 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐴 × {𝑥}):𝐴⟶{𝑥}) |
19 | 18 | 3ad2ant2 1131 | . . . . . . . 8 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝐴 × {𝑥}):𝐴⟶{𝑥}) |
20 | id 22 | . . . . . . . . . 10 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑥 ≠ 𝑦) → (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑥 ≠ 𝑦)) | |
21 | 20 | 3expa 1115 | . . . . . . . . 9 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑥 ≠ 𝑦)) |
22 | 21 | 3adant1 1127 | . . . . . . . 8 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑥 ≠ 𝑦)) |
23 | nf1oconst 7313 | . . . . . . . 8 ⊢ (((𝐴 × {𝑥}):𝐴⟶{𝑥} ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑥 ≠ 𝑦)) → ¬ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴) | |
24 | 19, 22, 23 | syl2anc 582 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → ¬ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴) |
25 | 2, 3 | elsymgbas 19340 | . . . . . . . . 9 ⊢ (𝐴 ∈ 𝑉 → ((𝐴 × {𝑥}) ∈ (Base‘𝐺) ↔ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴)) |
26 | 25 | notbid 317 | . . . . . . . 8 ⊢ (𝐴 ∈ 𝑉 → (¬ (𝐴 × {𝑥}) ∈ (Base‘𝐺) ↔ ¬ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴)) |
27 | 26 | 3ad2ant1 1130 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (¬ (𝐴 × {𝑥}) ∈ (Base‘𝐺) ↔ ¬ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴)) |
28 | 24, 27 | mpbird 256 | . . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → ¬ (𝐴 × {𝑥}) ∈ (Base‘𝐺)) |
29 | 10, 16, 28 | ssnelpssd 4108 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (Base‘𝐺) ⊊ (Base‘𝑀)) |
30 | 29 | 3exp 1116 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥 ≠ 𝑦 → (Base‘𝐺) ⊊ (Base‘𝑀)))) |
31 | 30 | rexlimdvv 3200 | . . 3 ⊢ (𝐴 ∈ 𝑉 → (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐴 𝑥 ≠ 𝑦 → (Base‘𝐺) ⊊ (Base‘𝑀))) |
32 | 31 | adantr 479 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 1 < (♯‘𝐴)) → (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐴 𝑥 ≠ 𝑦 → (Base‘𝐺) ⊊ (Base‘𝑀))) |
33 | 1, 32 | mpd 15 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 1 < (♯‘𝐴)) → (Base‘𝐺) ⊊ (Base‘𝑀)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ≠ wne 2929 ∃wrex 3059 ⊆ wss 3944 ⊊ wpss 3945 {csn 4630 class class class wbr 5149 × cxp 5676 ⟶wf 6545 –1-1-onto→wf1o 6548 ‘cfv 6549 (class class class)co 7419 ↑m cmap 8845 1c1 11141 < clt 11280 ♯chash 14325 Basecbs 17183 EndoFMndcefmnd 18828 SymGrpcsymg 19333 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5365 ax-pr 5429 ax-un 7741 ax-cnex 11196 ax-resscn 11197 ax-1cn 11198 ax-icn 11199 ax-addcl 11200 ax-addrcl 11201 ax-mulcl 11202 ax-mulrcl 11203 ax-mulcom 11204 ax-addass 11205 ax-mulass 11206 ax-distr 11207 ax-i2m1 11208 ax-1ne0 11209 ax-1rid 11210 ax-rnegex 11211 ax-rrecex 11212 ax-cnre 11213 ax-pre-lttri 11214 ax-pre-lttrn 11215 ax-pre-ltadd 11216 ax-pre-mulgt0 11217 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2930 df-nel 3036 df-ral 3051 df-rex 3060 df-reu 3364 df-rab 3419 df-v 3463 df-sbc 3774 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3964 df-nul 4323 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-tp 4635 df-op 4637 df-uni 4910 df-int 4951 df-iun 4999 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6307 df-ord 6374 df-on 6375 df-lim 6376 df-suc 6377 df-iota 6501 df-fun 6551 df-fn 6552 df-f 6553 df-f1 6554 df-fo 6555 df-f1o 6556 df-fv 6557 df-riota 7375 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7872 df-1st 7994 df-2nd 7995 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-1o 8487 df-er 8725 df-map 8847 df-en 8965 df-dom 8966 df-sdom 8967 df-fin 8968 df-card 9964 df-pnf 11282 df-mnf 11283 df-xr 11284 df-ltxr 11285 df-le 11286 df-sub 11478 df-neg 11479 df-nn 12246 df-2 12308 df-3 12309 df-4 12310 df-5 12311 df-6 12312 df-7 12313 df-8 12314 df-9 12315 df-n0 12506 df-xnn0 12578 df-z 12592 df-uz 12856 df-fz 13520 df-hash 14326 df-struct 17119 df-sets 17136 df-slot 17154 df-ndx 17166 df-base 17184 df-ress 17213 df-plusg 17249 df-tset 17255 df-efmnd 18829 df-symg 19334 |
This theorem is referenced by: symgvalstruct 19363 symgvalstructOLD 19364 |
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