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| Mirrors > Home > MPE Home > Th. List > xnn0xrge0 | Structured version Visualization version GIF version | ||
| Description: An extended nonnegative integer is an extended nonnegative real. (Contributed by AV, 10-Dec-2020.) |
| Ref | Expression |
|---|---|
| xnn0xrge0 | ⊢ (𝐴 ∈ ℕ0* → 𝐴 ∈ (0[,]+∞)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elxnn0 12476 | . 2 ⊢ (𝐴 ∈ ℕ0* ↔ (𝐴 ∈ ℕ0 ∨ 𝐴 = +∞)) | |
| 2 | nn0re 12410 | . . . . 5 ⊢ (𝐴 ∈ ℕ0 → 𝐴 ∈ ℝ) | |
| 3 | 2 | rexrd 11182 | . . . 4 ⊢ (𝐴 ∈ ℕ0 → 𝐴 ∈ ℝ*) |
| 4 | nn0ge0 12426 | . . . 4 ⊢ (𝐴 ∈ ℕ0 → 0 ≤ 𝐴) | |
| 5 | elxrge0 13373 | . . . 4 ⊢ (𝐴 ∈ (0[,]+∞) ↔ (𝐴 ∈ ℝ* ∧ 0 ≤ 𝐴)) | |
| 6 | 3, 4, 5 | sylanbrc 583 | . . 3 ⊢ (𝐴 ∈ ℕ0 → 𝐴 ∈ (0[,]+∞)) |
| 7 | 0xr 11179 | . . . . 5 ⊢ 0 ∈ ℝ* | |
| 8 | pnfxr 11186 | . . . . 5 ⊢ +∞ ∈ ℝ* | |
| 9 | 0lepnf 13047 | . . . . 5 ⊢ 0 ≤ +∞ | |
| 10 | ubicc2 13381 | . . . . 5 ⊢ ((0 ∈ ℝ* ∧ +∞ ∈ ℝ* ∧ 0 ≤ +∞) → +∞ ∈ (0[,]+∞)) | |
| 11 | 7, 8, 9, 10 | mp3an 1463 | . . . 4 ⊢ +∞ ∈ (0[,]+∞) |
| 12 | eleq1 2824 | . . . 4 ⊢ (𝐴 = +∞ → (𝐴 ∈ (0[,]+∞) ↔ +∞ ∈ (0[,]+∞))) | |
| 13 | 11, 12 | mpbiri 258 | . . 3 ⊢ (𝐴 = +∞ → 𝐴 ∈ (0[,]+∞)) |
| 14 | 6, 13 | jaoi 857 | . 2 ⊢ ((𝐴 ∈ ℕ0 ∨ 𝐴 = +∞) → 𝐴 ∈ (0[,]+∞)) |
| 15 | 1, 14 | sylbi 217 | 1 ⊢ (𝐴 ∈ ℕ0* → 𝐴 ∈ (0[,]+∞)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∨ wo 847 = wceq 1541 ∈ wcel 2113 class class class wbr 5098 (class class class)co 7358 0cc0 11026 +∞cpnf 11163 ℝ*cxr 11165 ≤ cle 11167 ℕ0cn0 12401 ℕ0*cxnn0 12474 [,]cicc 13264 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-cnex 11082 ax-resscn 11083 ax-1cn 11084 ax-icn 11085 ax-addcl 11086 ax-addrcl 11087 ax-mulcl 11088 ax-mulrcl 11089 ax-mulcom 11090 ax-addass 11091 ax-mulass 11092 ax-distr 11093 ax-i2m1 11094 ax-1ne0 11095 ax-1rid 11096 ax-rnegex 11097 ax-rrecex 11098 ax-cnre 11099 ax-pre-lttri 11100 ax-pre-lttrn 11101 ax-pre-ltadd 11102 ax-pre-mulgt0 11103 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-er 8635 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11168 df-mnf 11169 df-xr 11170 df-ltxr 11171 df-le 11172 df-sub 11366 df-neg 11367 df-nn 12146 df-n0 12402 df-xnn0 12475 df-icc 13268 |
| This theorem is referenced by: fldextrspundglemul 33836 |
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