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Theorem ismhm 13509
Description: Property of a monoid homomorphism. (Contributed by Mario Carneiro, 7-Mar-2015.)
Hypotheses
Ref Expression
ismhm.b 𝐵 = (Base‘𝑆)
ismhm.c 𝐶 = (Base‘𝑇)
ismhm.p + = (+g𝑆)
ismhm.q = (+g𝑇)
ismhm.z 0 = (0g𝑆)
ismhm.y 𝑌 = (0g𝑇)
Assertion
Ref Expression
ismhm (𝐹 ∈ (𝑆 MndHom 𝑇) ↔ ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) ∧ (𝐹:𝐵𝐶 ∧ ∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌)))
Distinct variable groups:   𝑥,𝑦,𝐵   𝑥,𝑆,𝑦   𝑥,𝑇,𝑦   𝑥,𝐹,𝑦
Allowed substitution hints:   𝐶(𝑥,𝑦)   + (𝑥,𝑦)   (𝑥,𝑦)   𝑌(𝑥,𝑦)   0 (𝑥,𝑦)

Proof of Theorem ismhm
Dummy variables 𝑓 𝑠 𝑡 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-mhm 13507 . . 3 MndHom = (𝑠 ∈ Mnd, 𝑡 ∈ Mnd ↦ {𝑓 ∈ ((Base‘𝑡) ↑𝑚 (Base‘𝑠)) ∣ (∀𝑥 ∈ (Base‘𝑠)∀𝑦 ∈ (Base‘𝑠)(𝑓‘(𝑥(+g𝑠)𝑦)) = ((𝑓𝑥)(+g𝑡)(𝑓𝑦)) ∧ (𝑓‘(0g𝑠)) = (0g𝑡))})
21elmpocl 6206 . 2 (𝐹 ∈ (𝑆 MndHom 𝑇) → (𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd))
3 fnmap 6810 . . . . . . 7 𝑚 Fn (V × V)
4 ismhm.c . . . . . . . 8 𝐶 = (Base‘𝑇)
5 basfn 13106 . . . . . . . . 9 Base Fn V
6 simpr 110 . . . . . . . . . 10 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝑇 ∈ Mnd)
76elexd 2813 . . . . . . . . 9 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝑇 ∈ V)
8 funfvex 5646 . . . . . . . . . 10 ((Fun Base ∧ 𝑇 ∈ dom Base) → (Base‘𝑇) ∈ V)
98funfni 5423 . . . . . . . . 9 ((Base Fn V ∧ 𝑇 ∈ V) → (Base‘𝑇) ∈ V)
105, 7, 9sylancr 414 . . . . . . . 8 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → (Base‘𝑇) ∈ V)
114, 10eqeltrid 2316 . . . . . . 7 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝐶 ∈ V)
12 ismhm.b . . . . . . . 8 𝐵 = (Base‘𝑆)
13 simpl 109 . . . . . . . . . 10 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝑆 ∈ Mnd)
1413elexd 2813 . . . . . . . . 9 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝑆 ∈ V)
15 funfvex 5646 . . . . . . . . . 10 ((Fun Base ∧ 𝑆 ∈ dom Base) → (Base‘𝑆) ∈ V)
1615funfni 5423 . . . . . . . . 9 ((Base Fn V ∧ 𝑆 ∈ V) → (Base‘𝑆) ∈ V)
175, 14, 16sylancr 414 . . . . . . . 8 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → (Base‘𝑆) ∈ V)
1812, 17eqeltrid 2316 . . . . . . 7 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝐵 ∈ V)
19 fnovex 6040 . . . . . . 7 (( ↑𝑚 Fn (V × V) ∧ 𝐶 ∈ V ∧ 𝐵 ∈ V) → (𝐶𝑚 𝐵) ∈ V)
203, 11, 18, 19mp3an2i 1376 . . . . . 6 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → (𝐶𝑚 𝐵) ∈ V)
21 rabexg 4227 . . . . . 6 ((𝐶𝑚 𝐵) ∈ V → {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)} ∈ V)
2220, 21syl 14 . . . . 5 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)} ∈ V)
23 fveq2 5629 . . . . . . . . 9 (𝑡 = 𝑇 → (Base‘𝑡) = (Base‘𝑇))
2423, 4eqtr4di 2280 . . . . . . . 8 (𝑡 = 𝑇 → (Base‘𝑡) = 𝐶)
25 fveq2 5629 . . . . . . . . 9 (𝑠 = 𝑆 → (Base‘𝑠) = (Base‘𝑆))
2625, 12eqtr4di 2280 . . . . . . . 8 (𝑠 = 𝑆 → (Base‘𝑠) = 𝐵)
2724, 26oveqan12rd 6027 . . . . . . 7 ((𝑠 = 𝑆𝑡 = 𝑇) → ((Base‘𝑡) ↑𝑚 (Base‘𝑠)) = (𝐶𝑚 𝐵))
2826adantr 276 . . . . . . . . 9 ((𝑠 = 𝑆𝑡 = 𝑇) → (Base‘𝑠) = 𝐵)
29 fveq2 5629 . . . . . . . . . . . . . 14 (𝑠 = 𝑆 → (+g𝑠) = (+g𝑆))
30 ismhm.p . . . . . . . . . . . . . 14 + = (+g𝑆)
3129, 30eqtr4di 2280 . . . . . . . . . . . . 13 (𝑠 = 𝑆 → (+g𝑠) = + )
3231oveqd 6024 . . . . . . . . . . . 12 (𝑠 = 𝑆 → (𝑥(+g𝑠)𝑦) = (𝑥 + 𝑦))
3332fveq2d 5633 . . . . . . . . . . 11 (𝑠 = 𝑆 → (𝑓‘(𝑥(+g𝑠)𝑦)) = (𝑓‘(𝑥 + 𝑦)))
34 fveq2 5629 . . . . . . . . . . . . 13 (𝑡 = 𝑇 → (+g𝑡) = (+g𝑇))
35 ismhm.q . . . . . . . . . . . . 13 = (+g𝑇)
3634, 35eqtr4di 2280 . . . . . . . . . . . 12 (𝑡 = 𝑇 → (+g𝑡) = )
3736oveqd 6024 . . . . . . . . . . 11 (𝑡 = 𝑇 → ((𝑓𝑥)(+g𝑡)(𝑓𝑦)) = ((𝑓𝑥) (𝑓𝑦)))
3833, 37eqeqan12d 2245 . . . . . . . . . 10 ((𝑠 = 𝑆𝑡 = 𝑇) → ((𝑓‘(𝑥(+g𝑠)𝑦)) = ((𝑓𝑥)(+g𝑡)(𝑓𝑦)) ↔ (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦))))
3928, 38raleqbidv 2744 . . . . . . . . 9 ((𝑠 = 𝑆𝑡 = 𝑇) → (∀𝑦 ∈ (Base‘𝑠)(𝑓‘(𝑥(+g𝑠)𝑦)) = ((𝑓𝑥)(+g𝑡)(𝑓𝑦)) ↔ ∀𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦))))
4028, 39raleqbidv 2744 . . . . . . . 8 ((𝑠 = 𝑆𝑡 = 𝑇) → (∀𝑥 ∈ (Base‘𝑠)∀𝑦 ∈ (Base‘𝑠)(𝑓‘(𝑥(+g𝑠)𝑦)) = ((𝑓𝑥)(+g𝑡)(𝑓𝑦)) ↔ ∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦))))
41 fveq2 5629 . . . . . . . . . . 11 (𝑠 = 𝑆 → (0g𝑠) = (0g𝑆))
42 ismhm.z . . . . . . . . . . 11 0 = (0g𝑆)
4341, 42eqtr4di 2280 . . . . . . . . . 10 (𝑠 = 𝑆 → (0g𝑠) = 0 )
4443fveq2d 5633 . . . . . . . . 9 (𝑠 = 𝑆 → (𝑓‘(0g𝑠)) = (𝑓0 ))
45 fveq2 5629 . . . . . . . . . 10 (𝑡 = 𝑇 → (0g𝑡) = (0g𝑇))
46 ismhm.y . . . . . . . . . 10 𝑌 = (0g𝑇)
4745, 46eqtr4di 2280 . . . . . . . . 9 (𝑡 = 𝑇 → (0g𝑡) = 𝑌)
4844, 47eqeqan12d 2245 . . . . . . . 8 ((𝑠 = 𝑆𝑡 = 𝑇) → ((𝑓‘(0g𝑠)) = (0g𝑡) ↔ (𝑓0 ) = 𝑌))
4940, 48anbi12d 473 . . . . . . 7 ((𝑠 = 𝑆𝑡 = 𝑇) → ((∀𝑥 ∈ (Base‘𝑠)∀𝑦 ∈ (Base‘𝑠)(𝑓‘(𝑥(+g𝑠)𝑦)) = ((𝑓𝑥)(+g𝑡)(𝑓𝑦)) ∧ (𝑓‘(0g𝑠)) = (0g𝑡)) ↔ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)))
5027, 49rabeqbidv 2794 . . . . . 6 ((𝑠 = 𝑆𝑡 = 𝑇) → {𝑓 ∈ ((Base‘𝑡) ↑𝑚 (Base‘𝑠)) ∣ (∀𝑥 ∈ (Base‘𝑠)∀𝑦 ∈ (Base‘𝑠)(𝑓‘(𝑥(+g𝑠)𝑦)) = ((𝑓𝑥)(+g𝑡)(𝑓𝑦)) ∧ (𝑓‘(0g𝑠)) = (0g𝑡))} = {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)})
5150, 1ovmpoga 6140 . . . . 5 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd ∧ {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)} ∈ V) → (𝑆 MndHom 𝑇) = {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)})
5222, 51mpd3an3 1372 . . . 4 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → (𝑆 MndHom 𝑇) = {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)})
5352eleq2d 2299 . . 3 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → (𝐹 ∈ (𝑆 MndHom 𝑇) ↔ 𝐹 ∈ {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)}))
5411, 18elmapd 6817 . . . . 5 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → (𝐹 ∈ (𝐶𝑚 𝐵) ↔ 𝐹:𝐵𝐶))
5554anbi1d 465 . . . 4 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → ((𝐹 ∈ (𝐶𝑚 𝐵) ∧ (∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌)) ↔ (𝐹:𝐵𝐶 ∧ (∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌))))
56 fveq1 5628 . . . . . . . 8 (𝑓 = 𝐹 → (𝑓‘(𝑥 + 𝑦)) = (𝐹‘(𝑥 + 𝑦)))
57 fveq1 5628 . . . . . . . . 9 (𝑓 = 𝐹 → (𝑓𝑥) = (𝐹𝑥))
58 fveq1 5628 . . . . . . . . 9 (𝑓 = 𝐹 → (𝑓𝑦) = (𝐹𝑦))
5957, 58oveq12d 6025 . . . . . . . 8 (𝑓 = 𝐹 → ((𝑓𝑥) (𝑓𝑦)) = ((𝐹𝑥) (𝐹𝑦)))
6056, 59eqeq12d 2244 . . . . . . 7 (𝑓 = 𝐹 → ((𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ↔ (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦))))
61602ralbidv 2554 . . . . . 6 (𝑓 = 𝐹 → (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ↔ ∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦))))
62 fveq1 5628 . . . . . . 7 (𝑓 = 𝐹 → (𝑓0 ) = (𝐹0 ))
6362eqeq1d 2238 . . . . . 6 (𝑓 = 𝐹 → ((𝑓0 ) = 𝑌 ↔ (𝐹0 ) = 𝑌))
6461, 63anbi12d 473 . . . . 5 (𝑓 = 𝐹 → ((∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌) ↔ (∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌)))
6564elrab 2959 . . . 4 (𝐹 ∈ {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)} ↔ (𝐹 ∈ (𝐶𝑚 𝐵) ∧ (∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌)))
66 3anass 1006 . . . 4 ((𝐹:𝐵𝐶 ∧ ∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌) ↔ (𝐹:𝐵𝐶 ∧ (∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌)))
6755, 65, 663bitr4g 223 . . 3 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → (𝐹 ∈ {𝑓 ∈ (𝐶𝑚 𝐵) ∣ (∀𝑥𝐵𝑦𝐵 (𝑓‘(𝑥 + 𝑦)) = ((𝑓𝑥) (𝑓𝑦)) ∧ (𝑓0 ) = 𝑌)} ↔ (𝐹:𝐵𝐶 ∧ ∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌)))
6853, 67bitrd 188 . 2 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → (𝐹 ∈ (𝑆 MndHom 𝑇) ↔ (𝐹:𝐵𝐶 ∧ ∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌)))
692, 68biadanii 615 1 (𝐹 ∈ (𝑆 MndHom 𝑇) ↔ ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) ∧ (𝐹:𝐵𝐶 ∧ ∀𝑥𝐵𝑦𝐵 (𝐹‘(𝑥 + 𝑦)) = ((𝐹𝑥) (𝐹𝑦)) ∧ (𝐹0 ) = 𝑌)))
Colors of variables: wff set class
Syntax hints:  wa 104  wb 105  w3a 1002   = wceq 1395  wcel 2200  wral 2508  {crab 2512  Vcvv 2799   × cxp 4717   Fn wfn 5313  wf 5314  cfv 5318  (class class class)co 6007  𝑚 cmap 6803  Basecbs 13047  +gcplusg 13125  0gc0g 13304  Mndcmnd 13464   MndHom cmhm 13505
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-in1 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4202  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-cnex 8101  ax-resscn 8102  ax-1re 8104  ax-addrcl 8107
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-ral 2513  df-rex 2514  df-rab 2517  df-v 2801  df-sbc 3029  df-csb 3125  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-int 3924  df-iun 3967  df-br 4084  df-opab 4146  df-mpt 4147  df-id 4384  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-rn 4730  df-res 4731  df-ima 4732  df-iota 5278  df-fun 5320  df-fn 5321  df-f 5322  df-fv 5326  df-ov 6010  df-oprab 6011  df-mpo 6012  df-1st 6292  df-2nd 6293  df-map 6805  df-inn 9122  df-ndx 13050  df-slot 13051  df-base 13053  df-mhm 13507
This theorem is referenced by:  mhmf  13513  mhmpropd  13514  mhmlin  13515  mhm0  13516  idmhm  13517  mhmf1o  13518  0mhm  13534  resmhm  13535  resmhm2  13536  resmhm2b  13537  mhmco  13538  mhmfmhm  13669  ghmmhm  13805  srglmhm  13971  srgrmhm  13972  dfrhm2  14133  isrhm2d  14144
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