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Mirrors > Home > MPE Home > Th. List > xrlttri3 | Structured version Visualization version GIF version |
Description: Trichotomy law for 'less than' for extended reals. (Contributed by NM, 9-Feb-2006.) |
Ref | Expression |
---|---|
xrlttri3 | ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 = 𝐵 ↔ (¬ 𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xrltso 12977 | . 2 ⊢ < Or ℝ* | |
2 | sotrieq2 5563 | . 2 ⊢ (( < Or ℝ* ∧ (𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*)) → (𝐴 = 𝐵 ↔ (¬ 𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴))) | |
3 | 1, 2 | mpan 687 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 = 𝐵 ↔ (¬ 𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1540 ∈ wcel 2105 class class class wbr 5093 Or wor 5532 ℝ*cxr 11110 < clt 11111 |
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 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2707 ax-sep 5244 ax-nul 5251 ax-pow 5309 ax-pr 5373 ax-un 7651 ax-cnex 11029 ax-resscn 11030 ax-pre-lttri 11047 ax-pre-lttrn 11048 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rab 3404 df-v 3443 df-sbc 3728 df-csb 3844 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-nul 4271 df-if 4475 df-pw 4550 df-sn 4575 df-pr 4577 df-op 4581 df-uni 4854 df-br 5094 df-opab 5156 df-mpt 5177 df-id 5519 df-po 5533 df-so 5534 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-iota 6432 df-fun 6482 df-fn 6483 df-f 6484 df-f1 6485 df-fo 6486 df-f1o 6487 df-fv 6488 df-er 8570 df-en 8806 df-dom 8807 df-sdom 8808 df-pnf 11113 df-mnf 11114 df-xr 11115 df-ltxr 11116 |
This theorem is referenced by: xrleltne 12981 xrletri3 12990 iccid 13226 xrlttri5d 43209 xreqnltd 43322 |
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