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Mirrors > Home > MPE Home > Th. List > Mathboxes > elxrge02 | Structured version Visualization version GIF version |
Description: Elementhood in the set of nonnegative extended reals. (Contributed by Thierry Arnoux, 18-Dec-2016.) |
Ref | Expression |
---|---|
elxrge02 | ⊢ (𝐴 ∈ (0[,]+∞) ↔ (𝐴 = 0 ∨ 𝐴 ∈ ℝ+ ∨ 𝐴 = +∞)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0xr 11031 | . . 3 ⊢ 0 ∈ ℝ* | |
2 | pnfxr 11038 | . . 3 ⊢ +∞ ∈ ℝ* | |
3 | 0lepnf 12877 | . . 3 ⊢ 0 ≤ +∞ | |
4 | eliccioo 31214 | . . 3 ⊢ ((0 ∈ ℝ* ∧ +∞ ∈ ℝ* ∧ 0 ≤ +∞) → (𝐴 ∈ (0[,]+∞) ↔ (𝐴 = 0 ∨ 𝐴 ∈ (0(,)+∞) ∨ 𝐴 = +∞))) | |
5 | 1, 2, 3, 4 | mp3an 1460 | . 2 ⊢ (𝐴 ∈ (0[,]+∞) ↔ (𝐴 = 0 ∨ 𝐴 ∈ (0(,)+∞) ∨ 𝐴 = +∞)) |
6 | biid 260 | . . 3 ⊢ (𝐴 = 0 ↔ 𝐴 = 0) | |
7 | ioorp 13166 | . . . 4 ⊢ (0(,)+∞) = ℝ+ | |
8 | 7 | eleq2i 2831 | . . 3 ⊢ (𝐴 ∈ (0(,)+∞) ↔ 𝐴 ∈ ℝ+) |
9 | biid 260 | . . 3 ⊢ (𝐴 = +∞ ↔ 𝐴 = +∞) | |
10 | 6, 8, 9 | 3orbi123i 1155 | . 2 ⊢ ((𝐴 = 0 ∨ 𝐴 ∈ (0(,)+∞) ∨ 𝐴 = +∞) ↔ (𝐴 = 0 ∨ 𝐴 ∈ ℝ+ ∨ 𝐴 = +∞)) |
11 | 5, 10 | bitri 274 | 1 ⊢ (𝐴 ∈ (0[,]+∞) ↔ (𝐴 = 0 ∨ 𝐴 ∈ ℝ+ ∨ 𝐴 = +∞)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 ∨ w3o 1085 = wceq 1539 ∈ wcel 2107 class class class wbr 5075 (class class class)co 7284 0cc0 10880 +∞cpnf 11015 ℝ*cxr 11017 ≤ cle 11019 ℝ+crp 12739 (,)cioo 13088 [,]cicc 13091 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2710 ax-sep 5224 ax-nul 5231 ax-pow 5289 ax-pr 5353 ax-un 7597 ax-cnex 10936 ax-resscn 10937 ax-1cn 10938 ax-icn 10939 ax-addcl 10940 ax-addrcl 10941 ax-mulcl 10942 ax-mulrcl 10943 ax-mulcom 10944 ax-addass 10945 ax-mulass 10946 ax-distr 10947 ax-i2m1 10948 ax-1ne0 10949 ax-1rid 10950 ax-rnegex 10951 ax-rrecex 10952 ax-cnre 10953 ax-pre-lttri 10954 ax-pre-lttrn 10955 ax-pre-ltadd 10956 ax-pre-mulgt0 10957 ax-pre-sup 10958 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-rmo 3072 df-reu 3073 df-rab 3074 df-v 3435 df-sbc 3718 df-csb 3834 df-dif 3891 df-un 3893 df-in 3895 df-ss 3905 df-pss 3907 df-nul 4258 df-if 4461 df-pw 4536 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4841 df-iun 4927 df-br 5076 df-opab 5138 df-mpt 5159 df-tr 5193 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6206 df-ord 6273 df-on 6274 df-lim 6275 df-suc 6276 df-iota 6395 df-fun 6439 df-fn 6440 df-f 6441 df-f1 6442 df-fo 6443 df-f1o 6444 df-fv 6445 df-riota 7241 df-ov 7287 df-oprab 7288 df-mpo 7289 df-om 7722 df-1st 7840 df-2nd 7841 df-frecs 8106 df-wrecs 8137 df-recs 8211 df-rdg 8250 df-er 8507 df-en 8743 df-dom 8744 df-sdom 8745 df-sup 9210 df-inf 9211 df-pnf 11020 df-mnf 11021 df-xr 11022 df-ltxr 11023 df-le 11024 df-sub 11216 df-neg 11217 df-div 11642 df-nn 11983 df-n0 12243 df-z 12329 df-uz 12592 df-q 12698 df-rp 12740 df-ioo 13092 df-ico 13094 df-icc 13095 |
This theorem is referenced by: xrpxdivcld 31218 esumcst 32040 |
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