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Mirrors > Home > MPE Home > Th. List > nnsscn | Structured version Visualization version GIF version |
Description: The positive integers are a subset of the complex numbers. Remark: this could also be proven from nnssre 12215 and ax-resscn 11164 at the cost of using more axioms. (Contributed by NM, 2-Aug-2004.) Reduce dependencies on axioms. (Revised by Steven Nguyen, 4-Oct-2022.) |
Ref | Expression |
---|---|
nnsscn | ⊢ ℕ ⊆ ℂ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-1cn 11165 | . 2 ⊢ 1 ∈ ℂ | |
2 | peano2cn 11385 | . . 3 ⊢ (𝑥 ∈ ℂ → (𝑥 + 1) ∈ ℂ) | |
3 | 2 | rgen 3055 | . 2 ⊢ ∀𝑥 ∈ ℂ (𝑥 + 1) ∈ ℂ |
4 | peano5nni 12214 | . 2 ⊢ ((1 ∈ ℂ ∧ ∀𝑥 ∈ ℂ (𝑥 + 1) ∈ ℂ) → ℕ ⊆ ℂ) | |
5 | 1, 3, 4 | mp2an 689 | 1 ⊢ ℕ ⊆ ℂ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2098 ∀wral 3053 ⊆ wss 3941 (class class class)co 7402 ℂcc 11105 1c1 11108 + caddc 11110 ℕcn 12211 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2695 ax-sep 5290 ax-nul 5297 ax-pr 5418 ax-un 7719 ax-1cn 11165 ax-addcl 11167 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-ral 3054 df-rex 3063 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3771 df-csb 3887 df-dif 3944 df-un 3946 df-in 3948 df-ss 3958 df-pss 3960 df-nul 4316 df-if 4522 df-pw 4597 df-sn 4622 df-pr 4624 df-op 4628 df-uni 4901 df-iun 4990 df-br 5140 df-opab 5202 df-mpt 5223 df-tr 5257 df-id 5565 df-eprel 5571 df-po 5579 df-so 5580 df-fr 5622 df-we 5624 df-xp 5673 df-rel 5674 df-cnv 5675 df-co 5676 df-dm 5677 df-rn 5678 df-res 5679 df-ima 5680 df-pred 6291 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6486 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-ov 7405 df-om 7850 df-2nd 7970 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-nn 12212 |
This theorem is referenced by: nnex 12217 nncn 12219 nncnd 12227 nn0sscn 12476 nn0addcl 12506 nn0mulcl 12507 dfz2 12576 nnexpcl 14041 fprodnncl 15901 nnrisefaccl 15965 znnen 16158 wunndx 17133 cmetcaulem 25160 mpodvdsmulf1o 27067 fsumdvdsmul 27068 dvdsmulf1o 27069 fsumdvdsmulOLD 27070 esumcvg 33604 eulerpartlemgs2 33899 fsum2dsub 34138 reprsuc 34146 nndivsub 35843 fsumnncl 44834 nnsgrpmgm 47100 nnsgrp 47101 nnsgrpnmnd 47102 |
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