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| Mirrors > Home > MPE Home > Th. List > Mathboxes > 0fno | Structured version Visualization version GIF version | ||
| Description: Ordinal zero maps to a surreal number. (Contributed by RP, 21-Sep-2023.) |
| Ref | Expression |
|---|---|
| 0fno | ⊢ ∅ ∈ No |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0xp 5723 | . 2 ⊢ (∅ × {2o}) = ∅ | |
| 2 | 0elon 6372 | . . 3 ⊢ ∅ ∈ On | |
| 3 | 2 | onnoxpi 43671 | . 2 ⊢ (∅ × {2o}) ∈ No |
| 4 | 1, 3 | eqeltrri 2833 | 1 ⊢ ∅ ∈ No |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2113 ∅c0 4285 {csn 4580 × cxp 5622 2oc2o 8391 No csur 27607 |
| 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-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| 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-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-ord 6320 df-on 6321 df-suc 6323 df-fun 6494 df-fn 6495 df-f 6496 df-1o 8397 df-2o 8398 df-no 27610 |
| This theorem is referenced by: (None) |
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