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| Mirrors > Home > MPE Home > Th. List > lestrd | Structured version Visualization version GIF version | ||
| Description: Surreal less-than or equal is transitive. (Contributed by Scott Fenton, 8-Dec-2021.) |
| Ref | Expression |
|---|---|
| ltstrd.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| ltstrd.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| ltstrd.3 | ⊢ (𝜑 → 𝐶 ∈ No ) |
| lestrd.4 | ⊢ (𝜑 → 𝐴 ≤s 𝐵) |
| lestrd.5 | ⊢ (𝜑 → 𝐵 ≤s 𝐶) |
| Ref | Expression |
|---|---|
| lestrd | ⊢ (𝜑 → 𝐴 ≤s 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lestrd.4 | . 2 ⊢ (𝜑 → 𝐴 ≤s 𝐵) | |
| 2 | lestrd.5 | . 2 ⊢ (𝜑 → 𝐵 ≤s 𝐶) | |
| 3 | ltstrd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 4 | ltstrd.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 5 | ltstrd.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ No ) | |
| 6 | lestr 27904 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐶 ∈ No ) → ((𝐴 ≤s 𝐵 ∧ 𝐵 ≤s 𝐶) → 𝐴 ≤s 𝐶)) | |
| 7 | 3, 4, 5, 6 | syl3anc 1398 | . 2 ⊢ (𝜑 → ((𝐴 ≤s 𝐵 ∧ 𝐵 ≤s 𝐶) → 𝐴 ≤s 𝐶)) |
| 8 | 1, 2, 7 | mp2and 711 | 1 ⊢ (𝜑 → 𝐴 ≤s 𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∈ wcel 2143 class class class wbr 5110 No csur 27782 ≤s cles 27886 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-tp 4595 df-op 4597 df-uni 4874 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-ord 6365 df-on 6366 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-fv 6546 df-1o 8454 df-2o 8455 df-no 27785 df-lts 27786 df-les 27887 |
| This theorem is referenced by: mulsuniflem 28320 leabss 28419 n0sge0 28509 bdaypw2n0bndlem 28634 bdayfinbndlem1 28638 |
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