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| Mirrors > Home > MPE Home > Th. List > eleenn | Structured version Visualization version GIF version | ||
| Description: If 𝐴 is in (𝔼‘𝑁), then 𝑁 is a natural. (Contributed by Scott Fenton, 1-Jul-2013.) |
| Ref | Expression |
|---|---|
| eleenn | ⊢ (𝐴 ∈ (𝔼‘𝑁) → 𝑁 ∈ ℕ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ee 29498 | . 2 ⊢ 𝔼 = (𝑛 ∈ ℕ ↦ (ℝ ↑m (1...𝑛))) | |
| 2 | 1 | mptrcl 7026 | 1 ⊢ (𝐴 ∈ (𝔼‘𝑁) → 𝑁 ∈ ℕ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2147 ‘cfv 6558 (class class class)co 7443 ↑m cmap 8875 ℝcr 11226 1c1 11228 ℕcn 12362 ...cfz 13666 𝔼cee 29495 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pr 5395 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-xp 5661 df-rel 5662 df-cnv 5663 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6512 df-fv 6566 df-ee 29498 |
| This theorem is used by: eleei 29505 eedimeq 29506 brbtwn 29507 brcgr 29508 eleesub 29519 eleesubd 29520 axsegconlem1 29525 axsegconlem8 29532 axeuclidlem 29570 brsegle 37051 |
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