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Theorem ixpconstg 8927
Description: Infinite Cartesian product of a constant 𝐵. (Contributed by Mario Carneiro, 11-Jan-2015.)
Assertion
Ref Expression
ixpconstg ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → X𝑥 ∈ 𝐴 𝐵 = (𝐵 ↑m 𝐴))
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵
Allowed substitution hints:   𝑉(𝑥)   𝑊(𝑥)

Proof of Theorem ixpconstg
Dummy variable 𝑓 is distinct from all other variables.
StepHypRef Expression
1 vex 3455 . . . . 5 𝑓 ∈ V
21elixpconst 8926 . . . 4 (𝑓 ∈ X𝑥 ∈ 𝐴 𝐵 ↔ 𝑓:𝐴⟶𝐵)
32eqabi 2896 . . 3 X𝑥 ∈ 𝐴 𝐵 = {𝑓 ∣ 𝑓:𝐴⟶𝐵}
4 mapvalg 8849 . . 3 ((𝐵 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉) → (𝐵 ↑m 𝐴) = {𝑓 ∣ 𝑓:𝐴⟶𝐵})
53, 4eqtr4id 2815 . 2 ((𝐵 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉) → X𝑥 ∈ 𝐴 𝐵 = (𝐵 ↑m 𝐴))
65ancoms 464 1 ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → X𝑥 ∈ 𝐴 𝐵 = (𝐵 ↑m 𝐴))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1570   ∈ wcel 2145  {cab 2739  ⟶wf 6533  (class class class)co 7418   ↑m cmap 8840  Xcixp 8918
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-nul 5260  ax-pow 5327  ax-pr 5391  ax-un 7749
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-sbc 3740  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-mpt 5187  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-iota 6493  df-fun 6539  df-fn 6540  df-f 6541  df-fv 6545  df-ov 7421  df-oprab 7422  df-mpo 7423  df-map 8842  df-ixp 8919
This theorem is used by:  ixpconst  8928  mapsnf1o  8960  prdshom  17631  pwsbas  17651  frlmip  22077  pttoponconst  23909  xkoptsub  23966  xkopt  23967  tmdgsum2  24408  rrxip  25704  ovnlecvr2  47589  tmachlem-tpbase  47918  naryfvalixp  49710
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