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| Mirrors > Home > MPE Home > Th. List > xrleid | Structured version Visualization version GIF version | ||
| Description: 'Less than or equal to' is reflexive for extended reals. (Contributed by NM, 7-Feb-2007.) |
| Ref | Expression |
|---|---|
| xrleid | ⊢ (𝐴 ∈ ℝ* → 𝐴 ≤ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2765 | . . . 4 ⊢ 𝐴 = 𝐴 | |
| 2 | 1 | olci 879 | . . 3 ⊢ (𝐴 < 𝐴 ∨ 𝐴 = 𝐴) |
| 3 | xrleloe 13160 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐴 ∈ ℝ*) → (𝐴 ≤ 𝐴 ↔ (𝐴 < 𝐴 ∨ 𝐴 = 𝐴))) | |
| 4 | 2, 3 | mpbiri 261 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐴 ∈ ℝ*) → 𝐴 ≤ 𝐴) |
| 5 | 4 | anidms 576 | 1 ⊢ (𝐴 ∈ ℝ* → 𝐴 ≤ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∨ wo 860 = wceq 1563 ∈ wcel 2145 class class class wbr 5105 ℝ*cxr 11230 < clt 11231 ≤ cle 11232 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 ax-cnex 11144 ax-resscn 11145 ax-pre-lttri 11162 ax-pre-lttrn 11163 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-br 5106 df-opab 5168 df-mpt 5187 df-id 5547 df-po 5560 df-so 5561 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 |
| This theorem is referenced by: xrleidd 13168 xrmax1 13192 xrmax2 13193 xrmin1 13194 xrmin2 13195 xlemul1a 13305 iooid 13391 iccid 13408 icc0 13411 ubioc1 13417 lbico1 13418 lbicc2 13482 ubicc2 13483 snunioc 13498 limsupgord 15513 ledm 18636 lern 18637 letsr 18639 xrsxmet 24928 ismbfd 25759 xraddge02 33014 xrstos 33243 elicc3 36690 xreqle 45894 snunioo1 46086 |
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