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| Mirrors > Home > ILE Home > Th. List > decnncl | GIF version | ||
| Description: Closure for a numeral. (Contributed by Mario Carneiro, 17-Apr-2015.) (Revised by AV, 6-Sep-2021.) |
| Ref | Expression |
|---|---|
| decnncl.1 | ⊢ 𝐴 ∈ ℕ0 |
| decnncl.2 | ⊢ 𝐵 ∈ ℕ |
| Ref | Expression |
|---|---|
| decnncl | ⊢ ;𝐴𝐵 ∈ ℕ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfdec10 9477 | . 2 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) | |
| 2 | 10nn0 9491 | . . 3 ⊢ ;10 ∈ ℕ0 | |
| 3 | decnncl.1 | . . 3 ⊢ 𝐴 ∈ ℕ0 | |
| 4 | decnncl.2 | . . 3 ⊢ 𝐵 ∈ ℕ | |
| 5 | 2, 3, 4 | numnncl 9483 | . 2 ⊢ ((;10 · 𝐴) + 𝐵) ∈ ℕ |
| 6 | 1, 5 | eqeltri 2269 | 1 ⊢ ;𝐴𝐵 ∈ ℕ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2167 (class class class)co 5925 0cc0 7896 1c1 7897 + caddc 7899 · cmul 7901 ℕcn 9007 ℕ0cn0 9266 ;cdc 9474 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-14 2170 ax-ext 2178 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-setind 4574 ax-cnex 7987 ax-resscn 7988 ax-1cn 7989 ax-1re 7990 ax-icn 7991 ax-addcl 7992 ax-addrcl 7993 ax-mulcl 7994 ax-addcom 7996 ax-mulcom 7997 ax-addass 7998 ax-mulass 7999 ax-distr 8000 ax-i2m1 8001 ax-1rid 8003 ax-0id 8004 ax-rnegex 8005 ax-cnre 8007 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-ral 2480 df-rex 2481 df-reu 2482 df-rab 2484 df-v 2765 df-sbc 2990 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-int 3876 df-br 4035 df-opab 4096 df-id 4329 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-iota 5220 df-fun 5261 df-fv 5267 df-riota 5880 df-ov 5928 df-oprab 5929 df-mpo 5930 df-sub 8216 df-inn 9008 df-2 9066 df-3 9067 df-4 9068 df-5 9069 df-6 9070 df-7 9071 df-8 9072 df-9 9073 df-n0 9267 df-dec 9475 |
| This theorem is referenced by: ocndx 12913 ocid 12914 dsndx 12917 dsid 12918 dsslid 12919 dsndxnn 12920 unifndx 12928 unifid 12929 unifndxnn 12930 slotsdifunifndx 12934 homndx 12935 homid 12936 homslid 12937 ccondx 12938 ccoid 12939 ccoslid 12940 imasvalstrd 12972 prdsvalstrd 12973 cnfldstr 14190 |
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