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| Mirrors > Home > MPE Home > Th. List > lenlts | Structured version Visualization version GIF version | ||
| Description: Surreal less-than or equal in terms of less-than. (Contributed by Scott Fenton, 8-Dec-2021.) |
| Ref | Expression |
|---|---|
| lenlts | ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≤s 𝐵 ↔ ¬ 𝐵 <s 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-les 27713 | . . . 4 ⊢ ≤s = (( No × No ) ∖ ◡ <s ) | |
| 2 | 1 | breqi 5104 | . . 3 ⊢ (𝐴 ≤s 𝐵 ↔ 𝐴(( No × No ) ∖ ◡ <s )𝐵) |
| 3 | brdif 5151 | . . 3 ⊢ (𝐴(( No × No ) ∖ ◡ <s )𝐵 ↔ (𝐴( No × No )𝐵 ∧ ¬ 𝐴◡ <s 𝐵)) | |
| 4 | brxp 5673 | . . . 4 ⊢ (𝐴( No × No )𝐵 ↔ (𝐴 ∈ No ∧ 𝐵 ∈ No )) | |
| 5 | 4 | anbi1i 624 | . . 3 ⊢ ((𝐴( No × No )𝐵 ∧ ¬ 𝐴◡ <s 𝐵) ↔ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ¬ 𝐴◡ <s 𝐵)) |
| 6 | 2, 3, 5 | 3bitri 297 | . 2 ⊢ (𝐴 ≤s 𝐵 ↔ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ¬ 𝐴◡ <s 𝐵)) |
| 7 | ibar 528 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (¬ 𝐴◡ <s 𝐵 ↔ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ¬ 𝐴◡ <s 𝐵))) | |
| 8 | brcnvg 5828 | . . . 4 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴◡ <s 𝐵 ↔ 𝐵 <s 𝐴)) | |
| 9 | 8 | notbid 318 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (¬ 𝐴◡ <s 𝐵 ↔ ¬ 𝐵 <s 𝐴)) |
| 10 | 7, 9 | bitr3d 281 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ¬ 𝐴◡ <s 𝐵) ↔ ¬ 𝐵 <s 𝐴)) |
| 11 | 6, 10 | bitrid 283 | 1 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≤s 𝐵 ↔ ¬ 𝐵 <s 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2113 ∖ cdif 3898 class class class wbr 5098 × cxp 5622 ◡ccnv 5623 No csur 27607 <s clts 27608 ≤s cles 27712 |
| 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-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-xp 5630 df-cnv 5632 df-les 27713 |
| This theorem is referenced by: ltnles 27721 lesloe 27722 lestri3 27723 lesnltd 27724 ltlestr 27728 leltstr 27729 lestr 27730 lesid 27735 lestric 27736 ltlesd 27741 ltsrec 27797 ltslpss 27904 cofcutr 27920 lenegs 28042 lesubsubsbd 28082 lesubsubs2bd 28083 lesubsubs3bd 28084 lesubaddsd 28089 lemuls2d 28170 lemuls1d 28171 ltonold 28257 oncutlt 28260 onnolt 28262 onles 28264 om2noseqlt2 28296 n0fincut 28351 bdaypw2n0bndlem 28459 bdaypw2bnd 28461 bdayfinbndlem1 28463 z12bdaylem1 28466 |
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