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Theorem ismhm 13534
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 13532 . . 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 6212 . 2 (𝐹 ∈ (𝑆 MndHom 𝑇) → (𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd))
3 fnmap 6819 . . . . . . 7 𝑚 Fn (V × V)
4 ismhm.c . . . . . . . 8 𝐶 = (Base‘𝑇)
5 basfn 13131 . . . . . . . . 9 Base Fn V
6 simpr 110 . . . . . . . . . 10 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝑇 ∈ Mnd)
76elexd 2814 . . . . . . . . 9 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝑇 ∈ V)
8 funfvex 5652 . . . . . . . . . 10 ((Fun Base ∧ 𝑇 ∈ dom Base) → (Base‘𝑇) ∈ V)
98funfni 5429 . . . . . . . . 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 2814 . . . . . . . . 9 ((𝑆 ∈ Mnd ∧ 𝑇 ∈ Mnd) → 𝑆 ∈ V)
15 funfvex 5652 . . . . . . . . . 10 ((Fun Base ∧ 𝑆 ∈ dom Base) → (Base‘𝑆) ∈ V)
1615funfni 5429 . . . . . . . . 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 6046 . . . . . . 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 4231 . . . . . 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 5635 . . . . . . . . 9 (𝑡 = 𝑇 → (Base‘𝑡) = (Base‘𝑇))
2423, 4eqtr4di 2280 . . . . . . . 8 (𝑡 = 𝑇 → (Base‘𝑡) = 𝐶)
25 fveq2 5635 . . . . . . . . 9 (𝑠 = 𝑆 → (Base‘𝑠) = (Base‘𝑆))
2625, 12eqtr4di 2280 . . . . . . . 8 (𝑠 = 𝑆 → (Base‘𝑠) = 𝐵)
2724, 26oveqan12rd 6033 . . . . . . 7 ((𝑠 = 𝑆𝑡 = 𝑇) → ((Base‘𝑡) ↑𝑚 (Base‘𝑠)) = (𝐶𝑚 𝐵))
2826adantr 276 . . . . . . . . 9 ((𝑠 = 𝑆𝑡 = 𝑇) → (Base‘𝑠) = 𝐵)
29 fveq2 5635 . . . . . . . . . . . . . 14 (𝑠 = 𝑆 → (+g𝑠) = (+g𝑆))
30 ismhm.p . . . . . . . . . . . . . 14 + = (+g𝑆)
3129, 30eqtr4di 2280 . . . . . . . . . . . . 13 (𝑠 = 𝑆 → (+g𝑠) = + )
3231oveqd 6030 . . . . . . . . . . . 12 (𝑠 = 𝑆 → (𝑥(+g𝑠)𝑦) = (𝑥 + 𝑦))
3332fveq2d 5639 . . . . . . . . . . 11 (𝑠 = 𝑆 → (𝑓‘(𝑥(+g𝑠)𝑦)) = (𝑓‘(𝑥 + 𝑦)))
34 fveq2 5635 . . . . . . . . . . . . 13 (𝑡 = 𝑇 → (+g𝑡) = (+g𝑇))
35 ismhm.q . . . . . . . . . . . . 13 = (+g𝑇)
3634, 35eqtr4di 2280 . . . . . . . . . . . 12 (𝑡 = 𝑇 → (+g𝑡) = )
3736oveqd 6030 . . . . . . . . . . 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 5635 . . . . . . . . . . 11 (𝑠 = 𝑆 → (0g𝑠) = (0g𝑆))
42 ismhm.z . . . . . . . . . . 11 0 = (0g𝑆)
4341, 42eqtr4di 2280 . . . . . . . . . 10 (𝑠 = 𝑆 → (0g𝑠) = 0 )
4443fveq2d 5639 . . . . . . . . 9 (𝑠 = 𝑆 → (𝑓‘(0g𝑠)) = (𝑓0 ))
45 fveq2 5635 . . . . . . . . . 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 2795 . . . . . 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 6146 . . . . 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 6826 . . . . 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 5634 . . . . . . . 8 (𝑓 = 𝐹 → (𝑓‘(𝑥 + 𝑦)) = (𝐹‘(𝑥 + 𝑦)))
57 fveq1 5634 . . . . . . . . 9 (𝑓 = 𝐹 → (𝑓𝑥) = (𝐹𝑥))
58 fveq1 5634 . . . . . . . . 9 (𝑓 = 𝐹 → (𝑓𝑦) = (𝐹𝑦))
5957, 58oveq12d 6031 . . . . . . . 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 5634 . . . . . . 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 2960 . . . 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 2800   × cxp 4721   Fn wfn 5319  wf 5320  cfv 5324  (class class class)co 6013  𝑚 cmap 6812  Basecbs 13072  +gcplusg 13150  0gc0g 13329  Mndcmnd 13489   MndHom cmhm 13530
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 4205  ax-pow 4262  ax-pr 4297  ax-un 4528  ax-setind 4633  ax-cnex 8113  ax-resscn 8114  ax-1re 8116  ax-addrcl 8119
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 2802  df-sbc 3030  df-csb 3126  df-dif 3200  df-un 3202  df-in 3204  df-ss 3211  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-int 3927  df-iun 3970  df-br 4087  df-opab 4149  df-mpt 4150  df-id 4388  df-xp 4729  df-rel 4730  df-cnv 4731  df-co 4732  df-dm 4733  df-rn 4734  df-res 4735  df-ima 4736  df-iota 5284  df-fun 5326  df-fn 5327  df-f 5328  df-fv 5332  df-ov 6016  df-oprab 6017  df-mpo 6018  df-1st 6298  df-2nd 6299  df-map 6814  df-inn 9134  df-ndx 13075  df-slot 13076  df-base 13078  df-mhm 13532
This theorem is referenced by:  mhmf  13538  mhmpropd  13539  mhmlin  13540  mhm0  13541  idmhm  13542  mhmf1o  13543  0mhm  13559  resmhm  13560  resmhm2  13561  resmhm2b  13562  mhmco  13563  mhmfmhm  13694  ghmmhm  13830  srglmhm  13996  srgrmhm  13997  dfrhm2  14158  isrhm2d  14169
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