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| Mirrors > Home > MPE Home > Th. List > nominmo | Structured version Visualization version GIF version | ||
| Description: A class of surreals has at most one minimum. (Contributed by Scott Fenton, 8-Aug-2024.) |
| Ref | Expression |
|---|---|
| nominmo | ⊢ (𝑆 ⊆ No → ∃*𝑥 ∈ 𝑆 ∀𝑦 ∈ 𝑆 ¬ 𝑦 <s 𝑥) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltsso 28045 | . . 3 ⊢ <s Or No | |
| 2 | soss 5582 | . . 3 ⊢ (𝑆 ⊆ No → ( <s Or No → <s Or 𝑆)) | |
| 3 | 1, 2 | mpi 21 | . 2 ⊢ (𝑆 ⊆ No → <s Or 𝑆) |
| 4 | somo 5601 | . 2 ⊢ ( <s Or 𝑆 → ∃*𝑥 ∈ 𝑆 ∀𝑦 ∈ 𝑆 ¬ 𝑦 <s 𝑥) | |
| 5 | 3, 4 | syl 18 | 1 ⊢ (𝑆 ⊆ No → ∃*𝑥 ∈ 𝑆 ∀𝑦 ∈ 𝑆 ¬ 𝑦 <s 𝑥) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∀wral 3079 ∃*wrmo 3367 ⊆ wss 3899 class class class wbr 5105 Or wor 5561 Nocsur 28009 <s clts 28010 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pr 5394 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 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-rmo 3368 df-rab 3416 df-v 3455 df-sbc 3742 df-csb 3851 df-ss 3900 df-pss 4016 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-tp 4592 df-op 4838 df-uni 4870 df-br 5106 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5549 df-eprel 5554 df-po 5562 df-so 5563 df-fr 5607 df-we 5609 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-ord 6371 df-on 6372 df-suc 6374 df-iota 6500 df-fun 6548 df-fn 6549 df-f 6550 df-fv 6554 df-1o 8487 df-2o 8488 df-no 28012 df-lts 28013 |
| This theorem is used by: noinfno 28087 noinfbday 28089 noinfbnd1 28098 noinfbnd2 28100 |
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