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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 14580 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 1 < (♯‘𝐴)) → ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐴 𝑥 ≠ 𝑦) | |
| 2 | symgpssefmnd.g | . . . . . . . . . 10 ⊢ 𝐺 = (SymGrp‘𝐴) | |
| 3 | eqid 2763 | . . . . . . . . . 10 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 4 | 2, 3 | symgbasmap 19606 | . . . . . . . . 9 ⊢ (𝑥 ∈ (Base‘𝐺) → 𝑥 ∈ (𝐴 ↑m 𝐴)) |
| 5 | symgpssefmnd.m | . . . . . . . . . 10 ⊢ 𝑀 = (EndoFMnd‘𝐴) | |
| 6 | eqid 2763 | . . . . . . . . . 10 ⊢ (Base‘𝑀) = (Base‘𝑀) | |
| 7 | 5, 6 | efmndbas 19082 | . . . . . . . . 9 ⊢ (Base‘𝑀) = (𝐴 ↑m 𝐴) |
| 8 | 4, 7 | eleqtrrdi 2875 | . . . . . . . 8 ⊢ (𝑥 ∈ (Base‘𝐺) → 𝑥 ∈ (Base‘𝑀)) |
| 9 | 8 | ssriv 3917 | . . . . . . 7 ⊢ (Base‘𝐺) ⊆ (Base‘𝑀) |
| 10 | 9 | a1i 11 | . . . . . 6 ⊢ ((𝐴 ∈ 𝑉 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 ≠ 𝑦) → (Base‘𝐺) ⊆ (Base‘𝑀)) |
| 11 | fconst6g 6782 | . . . . . . . . 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 19084 | . . . . . . . 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 6780 | . . . . . . . . . 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 7323 | . . . . . . . 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 19603 | . . . . . . . . 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 4046 | . . . . 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 3222 | . . 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 1569 ∈ wcel 2146 ≠ wne 2959 ∃wrex 3090 ⊆ wss 3900 ⊊ wpss 4016 {csn 4588 class class class wbr 5106 × cxp 5653 ⟶wf 6543 –1-1-onto→wf1o 6546 ‘cfv 6547 (class class class)co 7430 ↑m cmap 8861 1c1 11214 < clt 11356 ♯chash 14487 Basecbs 17402 EndoFMndcefmnd 19079 SymGrpcsymg 19598 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-rep 5235 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7761 ax-cnex 11269 ax-resscn 11270 ax-1cn 11271 ax-icn 11272 ax-addcl 11273 ax-addrcl 11274 ax-mulcl 11275 ax-mulrcl 11276 ax-mulcom 11277 ax-addass 11278 ax-mulass 11279 ax-distr 11280 ax-i2m1 11281 ax-1ne0 11282 ax-1rid 11283 ax-rnegex 11284 ax-rrecex 11285 ax-cnre 11286 ax-pre-lttri 11287 ax-pre-lttrn 11288 ax-pre-ltadd 11289 ax-pre-mulgt0 11290 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6311 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6501 df-fun 6549 df-fn 6550 df-f 6551 df-f1 6552 df-fo 6553 df-f1o 6554 df-fv 6555 df-riota 7387 df-ov 7433 df-oprab 7434 df-mpo 7435 df-om 7888 df-1st 8011 df-2nd 8012 df-frecs 8313 df-wrecs 8344 df-recs 8393 df-rdg 8432 df-1o 8490 df-er 8731 df-map 8863 df-en 8988 df-dom 8989 df-sdom 8990 df-fin 8991 df-card 10033 df-pnf 11358 df-mnf 11359 df-xr 11360 df-ltxr 11361 df-le 11362 df-sub 11556 df-neg 11557 df-nn 12349 df-2 12418 df-3 12419 df-4 12420 df-5 12421 df-6 12422 df-7 12423 df-8 12424 df-9 12425 df-n0 12620 df-xnn0 12693 df-z 12707 df-uz 12979 df-fz 13653 df-hash 14488 df-struct 17340 df-sets 17357 df-slot 17375 df-ndx 17387 df-base 17403 df-ress 17424 df-plusg 17456 df-tset 17462 df-efmnd 19080 df-symg 19599 |
| This theorem is used by: symgvalstruct 19626 |
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