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| Mirrors > Home > MPE Home > Th. List > efmndcl | Structured version Visualization version GIF version | ||
| Description: The group operation of the monoid of endofunctions on 𝐴 is closed. (Contributed by AV, 27-Jan-2024.) |
| Ref | Expression |
|---|---|
| efmndtset.g | ⊢ 𝐺 = (EndoFMnd‘𝐴) |
| efmndplusg.b | ⊢ 𝐵 = (Base‘𝐺) |
| efmndplusg.p | ⊢ + = (+g‘𝐺) |
| Ref | Expression |
|---|---|
| efmndcl | ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 + 𝑌) ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | efmndtset.g | . . 3 ⊢ 𝐺 = (EndoFMnd‘𝐴) | |
| 2 | efmndplusg.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
| 3 | efmndplusg.p | . . 3 ⊢ + = (+g‘𝐺) | |
| 4 | 1, 2, 3 | efmndov 18844 | . 2 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 + 𝑌) = (𝑋 ∘ 𝑌)) |
| 5 | 1, 2 | efmndbasf 18838 | . . . 4 ⊢ (𝑋 ∈ 𝐵 → 𝑋:𝐴⟶𝐴) |
| 6 | 1, 2 | efmndbasf 18838 | . . . 4 ⊢ (𝑌 ∈ 𝐵 → 𝑌:𝐴⟶𝐴) |
| 7 | fco 6688 | . . . 4 ⊢ ((𝑋:𝐴⟶𝐴 ∧ 𝑌:𝐴⟶𝐴) → (𝑋 ∘ 𝑌):𝐴⟶𝐴) | |
| 8 | 5, 6, 7 | syl2an 597 | . . 3 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ∘ 𝑌):𝐴⟶𝐴) |
| 9 | coexg 7875 | . . . 4 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ∘ 𝑌) ∈ V) | |
| 10 | 1, 2 | elefmndbas2 18837 | . . . 4 ⊢ ((𝑋 ∘ 𝑌) ∈ V → ((𝑋 ∘ 𝑌) ∈ 𝐵 ↔ (𝑋 ∘ 𝑌):𝐴⟶𝐴)) |
| 11 | 9, 10 | syl 17 | . . 3 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 ∘ 𝑌) ∈ 𝐵 ↔ (𝑋 ∘ 𝑌):𝐴⟶𝐴)) |
| 12 | 8, 11 | mpbird 257 | . 2 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ∘ 𝑌) ∈ 𝐵) |
| 13 | 4, 12 | eqeltrd 2837 | 1 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 + 𝑌) ∈ 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 Vcvv 3430 ∘ ccom 5630 ⟶wf 6490 ‘cfv 6494 (class class class)co 7362 Basecbs 17174 +gcplusg 17215 EndoFMndcefmnd 18831 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5304 ax-pr 5372 ax-un 7684 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5521 df-eprel 5526 df-po 5534 df-so 5535 df-fr 5579 df-we 5581 df-xp 5632 df-rel 5633 df-cnv 5634 df-co 5635 df-dm 5636 df-rn 5637 df-res 5638 df-ima 5639 df-pred 6261 df-ord 6322 df-on 6323 df-lim 6324 df-suc 6325 df-iota 6450 df-fun 6496 df-fn 6497 df-f 6498 df-f1 6499 df-fo 6500 df-f1o 6501 df-fv 6502 df-riota 7319 df-ov 7365 df-oprab 7366 df-mpo 7367 df-om 7813 df-1st 7937 df-2nd 7938 df-frecs 8226 df-wrecs 8257 df-recs 8306 df-rdg 8344 df-1o 8400 df-er 8638 df-map 8770 df-en 8889 df-dom 8890 df-sdom 8891 df-fin 8892 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-nn 12170 df-2 12239 df-3 12240 df-4 12241 df-5 12242 df-6 12243 df-7 12244 df-8 12245 df-9 12246 df-n0 12433 df-z 12520 df-uz 12784 df-fz 13457 df-struct 17112 df-slot 17147 df-ndx 17159 df-base 17175 df-plusg 17228 df-tset 17234 df-efmnd 18832 |
| This theorem is referenced by: efmndmgm 18848 efmndsgrp 18849 |
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