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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 14567 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 1 < (♯‘𝐴)) → ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐴 𝑥 ≠ 𝑦) | |
| 2 | symgpssefmnd.g | . . . . . . . . . 10 ⊢ 𝐺 = (SymGrp‘𝐴) | |
| 3 | eqid 2761 | . . . . . . . . . 10 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 4 | 2, 3 | symgbasmap 19591 | . . . . . . . . 9 ⊢ (𝑥 ∈ (Base‘𝐺) → 𝑥 ∈ (𝐴 ↑m 𝐴)) |
| 5 | symgpssefmnd.m | . . . . . . . . . 10 ⊢ 𝑀 = (EndoFMnd‘𝐴) | |
| 6 | eqid 2761 | . . . . . . . . . 10 ⊢ (Base‘𝑀) = (Base‘𝑀) | |
| 7 | 5, 6 | efmndbas 19067 | . . . . . . . . 9 ⊢ (Base‘𝑀) = (𝐴 ↑m 𝐴) |
| 8 | 4, 7 | eleqtrrdi 2872 | . . . . . . . 8 ⊢ (𝑥 ∈ (Base‘𝐺) → 𝑥 ∈ (Base‘𝑀)) |
| 9 | 8 | ssriv 3935 | . . . . . . 7 ⊢ (Base‘𝐺) ⊆ (Base‘𝑀) |
| 10 | 9 | a1i 11 | . . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (Base‘𝐺) ⊆ (Base‘𝑀)) |
| 11 | fconst6g 6771 | . . . . . . . . 9 ⊢ (𝑥 ∈ 𝐴 → (𝐴 × {𝑥}):𝐴⟶𝐴) | |
| 12 | 11 | adantr 486 | . . . . . . . 8 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐴 × {𝑥}):𝐴⟶𝐴) |
| 13 | 12 | 3ad2ant2 1152 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝐴 × {𝑥}):𝐴⟶𝐴) |
| 14 | 5, 6 | elefmndbas 19069 | . . . . . . . 8 ⊢ (𝐴 ∈ 𝑉 → ((𝐴 × {𝑥}) ∈ (Base‘𝑀) ↔ (𝐴 × {𝑥}):𝐴⟶𝐴)) |
| 15 | 14 | 3ad2ant1 1151 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → ((𝐴 × {𝑥}) ∈ (Base‘𝑀) ↔ (𝐴 × {𝑥}):𝐴⟶𝐴)) |
| 16 | 13, 15 | mpbird 260 | . . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝐴 × {𝑥}) ∈ (Base‘𝑀)) |
| 17 | fconstg 6769 | . . . . . . . . . 10 ⊢ (𝑥 ∈ 𝐴 → (𝐴 × {𝑥}):𝐴⟶{𝑥}) | |
| 18 | 17 | adantr 486 | . . . . . . . . 9 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝐴 × {𝑥}):𝐴⟶{𝑥}) |
| 19 | 18 | 3ad2ant2 1152 | . . . . . . . 8 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝐴 × {𝑥}):𝐴⟶{𝑥}) |
| 20 | id 23 | . . . . . . . . . 10 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑥 ≠ 𝑦) → (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑥 ≠ 𝑦)) | |
| 21 | 20 | 3expa 1136 | . . . . . . . . 9 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑥 ≠ 𝑦)) |
| 22 | 21 | 3adant1 1148 | . . . . . . . 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 596 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → ¬ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴) |
| 25 | 2, 3 | elsymgbas 19588 | . . . . . . . . 9 ⊢ (𝐴 ∈ 𝑉 → ((𝐴 × {𝑥}) ∈ (Base‘𝐺) ↔ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴)) |
| 26 | 25 | notbid 321 | . . . . . . . 8 ⊢ (𝐴 ∈ 𝑉 → (¬ (𝐴 × {𝑥}) ∈ (Base‘𝐺) ↔ ¬ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴)) |
| 27 | 26 | 3ad2ant1 1151 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (¬ (𝐴 × {𝑥}) ∈ (Base‘𝐺) ↔ ¬ (𝐴 × {𝑥}):𝐴–1-1-onto→𝐴)) |
| 28 | 24, 27 | mpbird 260 | . . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → ¬ (𝐴 × {𝑥}) ∈ (Base‘𝐺)) |
| 29 | 10, 16, 28 | ssnelpssd 4064 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (Base‘𝐺) ⊊ (Base‘𝑀)) |
| 30 | 29 | 3exp 1137 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → (𝑥 ≠ 𝑦 → (Base‘𝐺) ⊊ (Base‘𝑀)))) |
| 31 | 30 | rexlimdvv 3219 | . . 3 ⊢ (𝐴 ∈ 𝑉 → (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐴 𝑥 ≠ 𝑦 → (Base‘𝐺) ⊊ (Base‘𝑀))) |
| 32 | 31 | adantr 486 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 1 < (♯‘𝐴)) → (∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐴 𝑥 ≠ 𝑦 → (Base‘𝐺) ⊊ (Base‘𝑀))) |
| 33 | 1, 32 | mpd 16 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 1 < (♯‘𝐴)) → (Base‘𝐺) ⊊ (Base‘𝑀)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 ≠ wne 2956 ∃wrex 3087 ⊆ wss 3899 ⊊ wpss 3900 {csn 4584 class class class wbr 5103 × cxp 5649 ⟶wf 6534 –1-1-onto→wf1o 6537 ‘cfv 6538 (class class class)co 7420 ↑m cmap 8847 1c1 11201 < clt 11343 ♯chash 14474 Basecbs 17387 EndoFMndcefmnd 19064 SymGrpcsymg 19583 |
| 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 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 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-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-er 8717 df-map 8849 df-en 8974 df-dom 8975 df-sdom 8976 df-fin 8977 df-card 10020 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-nn 12336 df-2 12405 df-3 12406 df-4 12407 df-5 12408 df-6 12409 df-7 12410 df-8 12411 df-9 12412 df-n0 12607 df-xnn0 12680 df-z 12694 df-uz 12966 df-fz 13640 df-hash 14475 df-struct 17325 df-sets 17342 df-slot 17360 df-ndx 17372 df-base 17388 df-ress 17409 df-plusg 17441 df-tset 17447 df-efmnd 19065 df-symg 19584 |
| This theorem is used by: symgvalstruct 19611 |
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