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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 29355 | . 2 ⊢ 𝔼 = (𝑛 ∈ ℕ ↦ (ℝ ↑m (1...𝑛))) | |
| 2 | 1 | mptrcl 7000 | 1 ⊢ (𝐴 ∈ (𝔼‘𝑁) → 𝑁 ∈ ℕ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ‘cfv 6537 (class class class)co 7417 ↑m cmap 8830 ℝcr 11127 1c1 11129 ℕcn 12261 ...cfz 13565 𝔼cee 29352 |
| 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-nul 5267 ax-pr 5402 |
| 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-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-xp 5665 df-rel 5666 df-cnv 5667 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fv 6545 df-ee 29355 |
| This theorem is used by: eleei 29362 eedimeq 29363 brbtwn 29364 brcgr 29365 eleesub 29376 eleesubd 29377 axsegconlem1 29382 axsegconlem8 29389 axeuclidlem 29427 brsegle 36696 |
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