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Theorem ucnval 21891
 Description: The set of all uniformly continuous function from uniform space 𝑈 to uniform space 𝑉. (Contributed by Thierry Arnoux, 16-Nov-2017.)
Assertion
Ref Expression
ucnval ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → (𝑈 Cnu𝑉) = {𝑓 ∈ (𝑌𝑚 𝑋) ∣ ∀𝑠𝑉𝑟𝑈𝑥𝑋𝑦𝑋 (𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))})
Distinct variable groups:   𝑓,𝑟,𝑠,𝑥,𝑦,𝑈   𝑓,𝑉,𝑟,𝑠,𝑥   𝑓,𝑋,𝑟,𝑠,𝑥,𝑦   𝑓,𝑌,𝑟,𝑠,𝑥
Allowed substitution hints:   𝑉(𝑦)   𝑌(𝑦)

Proof of Theorem ucnval
Dummy variables 𝑢 𝑣 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 elrnust 21838 . . . 4 (𝑈 ∈ (UnifOn‘𝑋) → 𝑈 ran UnifOn)
21adantr 480 . . 3 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → 𝑈 ran UnifOn)
3 elrnust 21838 . . . 4 (𝑉 ∈ (UnifOn‘𝑌) → 𝑉 ran UnifOn)
43adantl 481 . . 3 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → 𝑉 ran UnifOn)
5 ovex 6577 . . . . 5 (dom 𝑉𝑚 dom 𝑈) ∈ V
65rabex 4740 . . . 4 {𝑓 ∈ (dom 𝑉𝑚 dom 𝑈) ∣ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))} ∈ V
76a1i 11 . . 3 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → {𝑓 ∈ (dom 𝑉𝑚 dom 𝑈) ∣ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))} ∈ V)
8 simpr 476 . . . . . . . 8 ((𝑢 = 𝑈𝑣 = 𝑉) → 𝑣 = 𝑉)
98unieqd 4382 . . . . . . 7 ((𝑢 = 𝑈𝑣 = 𝑉) → 𝑣 = 𝑉)
109dmeqd 5248 . . . . . 6 ((𝑢 = 𝑈𝑣 = 𝑉) → dom 𝑣 = dom 𝑉)
11 simpl 472 . . . . . . . 8 ((𝑢 = 𝑈𝑣 = 𝑉) → 𝑢 = 𝑈)
1211unieqd 4382 . . . . . . 7 ((𝑢 = 𝑈𝑣 = 𝑉) → 𝑢 = 𝑈)
1312dmeqd 5248 . . . . . 6 ((𝑢 = 𝑈𝑣 = 𝑉) → dom 𝑢 = dom 𝑈)
1410, 13oveq12d 6567 . . . . 5 ((𝑢 = 𝑈𝑣 = 𝑉) → (dom 𝑣𝑚 dom 𝑢) = (dom 𝑉𝑚 dom 𝑈))
1513raleqdv 3121 . . . . . . . 8 ((𝑢 = 𝑈𝑣 = 𝑉) → (∀𝑦 ∈ dom 𝑢(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦)) ↔ ∀𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))))
1613, 15raleqbidv 3129 . . . . . . 7 ((𝑢 = 𝑈𝑣 = 𝑉) → (∀𝑥 ∈ dom 𝑢𝑦 ∈ dom 𝑢(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦)) ↔ ∀𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))))
1711, 16rexeqbidv 3130 . . . . . 6 ((𝑢 = 𝑈𝑣 = 𝑉) → (∃𝑟𝑢𝑥 ∈ dom 𝑢𝑦 ∈ dom 𝑢(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦)) ↔ ∃𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))))
188, 17raleqbidv 3129 . . . . 5 ((𝑢 = 𝑈𝑣 = 𝑉) → (∀𝑠𝑣𝑟𝑢𝑥 ∈ dom 𝑢𝑦 ∈ dom 𝑢(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦)) ↔ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))))
1914, 18rabeqbidv 3168 . . . 4 ((𝑢 = 𝑈𝑣 = 𝑉) → {𝑓 ∈ (dom 𝑣𝑚 dom 𝑢) ∣ ∀𝑠𝑣𝑟𝑢𝑥 ∈ dom 𝑢𝑦 ∈ dom 𝑢(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))} = {𝑓 ∈ (dom 𝑉𝑚 dom 𝑈) ∣ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))})
20 df-ucn 21890 . . . 4 Cnu = (𝑢 ran UnifOn, 𝑣 ran UnifOn ↦ {𝑓 ∈ (dom 𝑣𝑚 dom 𝑢) ∣ ∀𝑠𝑣𝑟𝑢𝑥 ∈ dom 𝑢𝑦 ∈ dom 𝑢(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))})
2119, 20ovmpt2ga 6688 . . 3 ((𝑈 ran UnifOn ∧ 𝑉 ran UnifOn ∧ {𝑓 ∈ (dom 𝑉𝑚 dom 𝑈) ∣ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))} ∈ V) → (𝑈 Cnu𝑉) = {𝑓 ∈ (dom 𝑉𝑚 dom 𝑈) ∣ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))})
222, 4, 7, 21syl3anc 1318 . 2 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → (𝑈 Cnu𝑉) = {𝑓 ∈ (dom 𝑉𝑚 dom 𝑈) ∣ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))})
23 ustbas2 21839 . . . 4 (𝑉 ∈ (UnifOn‘𝑌) → 𝑌 = dom 𝑉)
24 ustbas2 21839 . . . 4 (𝑈 ∈ (UnifOn‘𝑋) → 𝑋 = dom 𝑈)
2523, 24oveqan12rd 6569 . . 3 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → (𝑌𝑚 𝑋) = (dom 𝑉𝑚 dom 𝑈))
2624adantr 480 . . . . . 6 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → 𝑋 = dom 𝑈)
2726raleqdv 3121 . . . . . 6 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → (∀𝑦𝑋 (𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦)) ↔ ∀𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))))
2826, 27raleqbidv 3129 . . . . 5 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → (∀𝑥𝑋𝑦𝑋 (𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦)) ↔ ∀𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))))
2928rexbidv 3034 . . . 4 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → (∃𝑟𝑈𝑥𝑋𝑦𝑋 (𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦)) ↔ ∃𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))))
3029ralbidv 2969 . . 3 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → (∀𝑠𝑉𝑟𝑈𝑥𝑋𝑦𝑋 (𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦)) ↔ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))))
3125, 30rabeqbidv 3168 . 2 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → {𝑓 ∈ (𝑌𝑚 𝑋) ∣ ∀𝑠𝑉𝑟𝑈𝑥𝑋𝑦𝑋 (𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))} = {𝑓 ∈ (dom 𝑉𝑚 dom 𝑈) ∣ ∀𝑠𝑉𝑟𝑈𝑥 ∈ dom 𝑈𝑦 ∈ dom 𝑈(𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))})
3222, 31eqtr4d 2647 1 ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ (UnifOn‘𝑌)) → (𝑈 Cnu𝑉) = {𝑓 ∈ (𝑌𝑚 𝑋) ∣ ∀𝑠𝑉𝑟𝑈𝑥𝑋𝑦𝑋 (𝑥𝑟𝑦 → (𝑓𝑥)𝑠(𝑓𝑦))})
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 383   = wceq 1475   ∈ wcel 1977  ∀wral 2896  ∃wrex 2897  {crab 2900  Vcvv 3173  ∪ cuni 4372   class class class wbr 4583  dom cdm 5038  ran crn 5039  ‘cfv 5804  (class class class)co 6549   ↑𝑚 cmap 7744  UnifOncust 21813   Cnucucn 21889 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-iota 5768  df-fun 5806  df-fn 5807  df-fv 5812  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-ust 21814  df-ucn 21890 This theorem is referenced by:  isucn  21892
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