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Mirrors > Home > ILE Home > Th. List > nnnn0addcl | Unicode version |
Description: A positive integer plus a nonnegative integer is a positive integer. (Contributed by NM, 20-Apr-2005.) (Proof shortened by Mario Carneiro, 16-May-2014.) |
Ref | Expression |
---|---|
nnnn0addcl |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elnn0 9242 |
. 2
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2 | nnaddcl 9002 |
. . 3
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3 | oveq2 5926 |
. . . . 5
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4 | nncn 8990 |
. . . . . 6
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5 | 4 | addridd 8168 |
. . . . 5
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6 | 3, 5 | sylan9eqr 2248 |
. . . 4
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7 | simpl 109 |
. . . 4
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8 | 6, 7 | eqeltrd 2270 |
. . 3
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9 | 2, 8 | jaodan 798 |
. 2
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10 | 1, 9 | sylan2b 287 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2175 ax-sep 4147 ax-cnex 7963 ax-resscn 7964 ax-1cn 7965 ax-1re 7966 ax-icn 7967 ax-addcl 7968 ax-addrcl 7969 ax-mulcl 7970 ax-addass 7974 ax-i2m1 7977 ax-0id 7980 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-rab 2481 df-v 2762 df-un 3157 df-in 3159 df-ss 3166 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-int 3871 df-br 4030 df-iota 5215 df-fv 5262 df-ov 5921 df-inn 8983 df-n0 9241 |
This theorem is referenced by: nn0nnaddcl 9271 elz2 9388 bcxmas 11632 |
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