MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  lo1dm Structured version   Visualization version   GIF version

Theorem lo1dm 15522
Description: An eventually upper bounded function's domain is a subset of the reals. (Contributed by Mario Carneiro, 26-May-2016.)
Assertion
Ref Expression
lo1dm (𝐹 ∈ ≤𝑂(1) → dom 𝐹 ⊆ ℝ)

Proof of Theorem lo1dm
Dummy variables 𝑥 𝑚 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ello1 15518 . . 3 (𝐹 ∈ ≤𝑂(1) ↔ (𝐹 ∈ (ℝ ↑pm ℝ) ∧ ∃𝑥 ∈ ℝ ∃𝑚 ∈ ℝ ∀𝑦 ∈ (dom 𝐹 ∩ (𝑥[,)+∞))(𝐹𝑦) ≤ 𝑚))
21simplbi 499 . 2 (𝐹 ∈ ≤𝑂(1) → 𝐹 ∈ (ℝ ↑pm ℝ))
3 reex 11154 . . . 4 ℝ ∈ V
43, 3elpm2 8845 . . 3 (𝐹 ∈ (ℝ ↑pm ℝ) ↔ (𝐹:dom 𝐹⟶ℝ ∧ dom 𝐹 ⊆ ℝ))
54simprbi 500 . 2 (𝐹 ∈ (ℝ ↑pm ℝ) → dom 𝐹 ⊆ ℝ)
62, 5syl 17 1 (𝐹 ∈ ≤𝑂(1) → dom 𝐹 ⊆ ℝ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2136  wral 3070  wrex 3080  cin 3898  wss 3899   class class class wbr 5094  dom cdm 5640  wf 6506  cfv 6510  (class class class)co 7385  pm cpm 8797  cr 11062  +∞cpnf 11203  cle 11207  [,)cico 13341  ≤𝑂(1)clo1 15490
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1809  ax-4 1823  ax-5 1924  ax-6 1981  ax-7 2022  ax-8 2138  ax-9 2146  ax-10 2169  ax-11 2185  ax-12 2206  ax-ext 2728  ax-sep 5240  ax-pow 5316  ax-pr 5384  ax-un 7707  ax-cnex 11119  ax-resscn 11120
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 857  df-3an 1097  df-tru 1557  df-fal 1567  df-ex 1794  df-nf 1798  df-sb 2085  df-mo 2560  df-eu 2590  df-clab 2735  df-cleq 2748  df-clel 2831  df-nfc 2905  df-ne 2952  df-ral 3071  df-rex 3081  df-rab 3409  df-v 3450  df-sbc 3740  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4281  df-if 4475  df-pw 4551  df-sn 4577  df-pr 4579  df-op 4583  df-uni 4860  df-br 5095  df-opab 5157  df-id 5535  df-xp 5646  df-rel 5647  df-cnv 5648  df-co 5649  df-dm 5650  df-rn 5651  df-iota 6466  df-fun 6512  df-fn 6513  df-f 6514  df-fv 6518  df-ov 7388  df-oprab 7389  df-mpo 7390  df-pm 8799  df-lo1 15494
This theorem is referenced by:  lo1bdd  15523  lo1o1  15535  o1lo1  15540  o1lo12  15541  lo1res  15562  lo1eq  15571  lo1add  15630  lo1mul  15631  lo1le  15655
  Copyright terms: Public domain W3C validator