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| Mirrors > Home > MPE Home > Th. List > lo1dm | Structured version Visualization version GIF version | ||
| Description: An eventually upper bounded function's domain is a subset of the reals. (Contributed by Mario Carneiro, 26-May-2016.) |
| Ref | Expression |
|---|---|
| lo1dm | ⊢ (𝐹 ∈ ≤𝑂(1) → dom 𝐹 ⊆ ℝ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ello1 15604 | . . 3 ⊢ (𝐹 ∈ ≤𝑂(1) ↔ (𝐹 ∈ (ℝ ↑pm ℝ) ∧ ∃𝑥 ∈ ℝ ∃𝑚 ∈ ℝ ∀𝑦 ∈ (dom 𝐹 ∩ (𝑥[,)+∞))(𝐹‘𝑦) ≤ 𝑚)) | |
| 2 | 1 | simplbi 502 | . 2 ⊢ (𝐹 ∈ ≤𝑂(1) → 𝐹 ∈ (ℝ ↑pm ℝ)) |
| 3 | reex 11218 | . . . 4 ⊢ ℝ ∈ V | |
| 4 | 3, 3 | elpm2 8884 | . . 3 ⊢ (𝐹 ∈ (ℝ ↑pm ℝ) ↔ (𝐹:dom 𝐹⟶ℝ ∧ dom 𝐹 ⊆ ℝ)) |
| 5 | 4 | simprbi 503 | . 2 ⊢ (𝐹 ∈ (ℝ ↑pm ℝ) → dom 𝐹 ⊆ ℝ) |
| 6 | 2, 5 | syl 18 | 1 ⊢ (𝐹 ∈ ≤𝑂(1) → dom 𝐹 ⊆ ℝ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ∀wral 3078 ∃wrex 3088 ∩ cin 3901 ⊆ wss 3902 class class class wbr 5107 dom cdm 5659 ⟶wf 6533 ‘cfv 6537 (class class class)co 7416 ↑pm cpm 8830 ℝcr 11126 +∞cpnf 11267 ≤ cle 11271 [,)cico 13402 ≤𝑂(1)clo1 15576 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-cnex 11183 ax-resscn 11184 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-sbc 3743 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-fv 6545 df-ov 7419 df-oprab 7420 df-mpo 7421 df-pm 8832 df-lo1 15580 |
| This theorem is used by: lo1bdd 15609 lo1o1 15621 o1lo1 15626 o1lo12 15627 lo1res 15648 lo1eq 15657 lo1add 15716 lo1mul 15717 lo1le 15741 |
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