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| Mirrors > Home > MPE Home > Th. List > elico1 | Structured version Visualization version GIF version | ||
| Description: Membership in a closed-below, open-above interval of extended reals. (Contributed by NM, 24-Dec-2006.) (Revised by Mario Carneiro, 3-Nov-2013.) |
| Ref | Expression |
|---|---|
| elico1 | ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,)𝐵) ↔ (𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 < 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ico 13522 | . 2 ⊢ [,) = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦)}) | |
| 2 | 1 | elixx1 13525 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐶 ∈ (𝐴[,)𝐵) ↔ (𝐶 ∈ ℝ* ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 < 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 ∈ wcel 2147 class class class wbr 5108 (class class class)co 7451 ℝ*cxr 11381 < clt 11382 ≤ cle 11383 [,)cico 13518 |
| 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 5255 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 |
| 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-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-iota 6520 df-fun 6568 df-fv 6574 df-ov 7454 df-oprab 7455 df-mpo 7456 df-xr 11386 df-ico 13522 |
| This theorem is used by: elicod 13566 icogelb 13567 lbico1 13571 elico2 13581 icodisj 13647 ico01fl0 13999 addmodid 14102 leordtvallem2 23584 pnfnei 23593 mnfnei 23594 blval2 24936 metuel2 24939 iscfil2 25642 eliccelico 33465 elicoelioo 33466 xrdifh 33468 fsumrp0cl 33681 ply1degltel 34229 ply1degleel 34230 ply1degltdimlem 34365 xrge0iifcnv 34676 esumpcvgval 34821 dnizeq0 37556 relowlssretop 38554 tan2h 38803 iocinico 44475 rfcnpre3 46324 icoltub 46793 icoiccdif 46809 iccelpart 48788 icceuelpart 48791 bgoldbtbndlem1 49176 bgoldbtbndlem2 49177 bgoldbtbndlem3 49178 bgoldbtbnd 49180 |
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