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Mirrors > Home > ILE Home > Th. List > 10nn | GIF version |
Description: 10 is a positive integer. (Contributed by NM, 8-Nov-2012.) (Revised by AV, 6-Sep-2021.) |
Ref | Expression |
---|---|
10nn | ⊢ ;10 ∈ ℕ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 9p1e10 9318 | . 2 ⊢ (9 + 1) = ;10 | |
2 | 9nn 9019 | . . 3 ⊢ 9 ∈ ℕ | |
3 | peano2nn 8863 | . . 3 ⊢ (9 ∈ ℕ → (9 + 1) ∈ ℕ) | |
4 | 2, 3 | ax-mp 5 | . 2 ⊢ (9 + 1) ∈ ℕ |
5 | 1, 4 | eqeltrri 2238 | 1 ⊢ ;10 ∈ ℕ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2135 (class class class)co 5839 0cc0 7747 1c1 7748 + caddc 7750 ℕcn 8851 9c9 8909 ;cdc 9316 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-ext 2146 ax-sep 4097 ax-cnex 7838 ax-resscn 7839 ax-1cn 7840 ax-1re 7841 ax-icn 7842 ax-addcl 7843 ax-addrcl 7844 ax-mulcl 7845 ax-mulcom 7848 ax-addass 7849 ax-mulass 7850 ax-distr 7851 ax-1rid 7854 ax-0id 7855 ax-cnre 7858 |
This theorem depends on definitions: df-bi 116 df-3an 969 df-tru 1345 df-nf 1448 df-sb 1750 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ral 2447 df-rex 2448 df-rab 2451 df-v 2726 df-un 3118 df-in 3120 df-ss 3127 df-sn 3579 df-pr 3580 df-op 3582 df-uni 3787 df-int 3822 df-br 3980 df-iota 5150 df-fv 5193 df-ov 5842 df-inn 8852 df-2 8910 df-3 8911 df-4 8912 df-5 8913 df-6 8914 df-7 8915 df-8 8916 df-9 8917 df-dec 9317 |
This theorem is referenced by: 10pos 9332 10re 9334 decnncl2 9339 declt 9343 decltc 9344 declti 9353 dec10p 9358 plendx 12543 pleid 12544 pleslid 12545 |
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