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Mirrors > Home > ILE Home > Th. List > nninfdc | Unicode version |
Description: An unbounded decidable set of positive integers is infinite. (Contributed by Jim Kingdon, 23-Sep-2024.) |
Ref | Expression |
---|---|
nninfdc |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnenom 10508 |
. . 3
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2 | 1 | ensymi 6838 |
. 2
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3 | breq1 4033 |
. . . . . . 7
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4 | 3 | rexbidv 2495 |
. . . . . 6
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5 | simp3 1001 |
. . . . . 6
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6 | 1nn 8995 |
. . . . . . 7
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7 | 6 | a1i 9 |
. . . . . 6
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8 | 4, 5, 7 | rspcdva 2870 |
. . . . 5
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9 | breq2 4034 |
. . . . . 6
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10 | 9 | cbvrexv 2727 |
. . . . 5
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11 | 8, 10 | sylib 122 |
. . . 4
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12 | simpl1 1002 |
. . . . . 6
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13 | simpl2 1003 |
. . . . . 6
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14 | simpl3 1004 |
. . . . . 6
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15 | simpr 110 |
. . . . . 6
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16 | fvoveq1 5942 |
. . . . . . . . . 10
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17 | 16 | ineq2d 3361 |
. . . . . . . . 9
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18 | 17 | infeq1d 7073 |
. . . . . . . 8
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19 | eqidd 2194 |
. . . . . . . 8
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20 | 18, 19 | cbvmpov 5999 |
. . . . . . 7
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21 | seqeq2 10525 |
. . . . . . 7
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22 | 20, 21 | ax-mp 5 |
. . . . . 6
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23 | 12, 13, 14, 15, 22 | nninfdclemf1 12612 |
. . . . 5
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24 | seqex 10523 |
. . . . . 6
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25 | f1eq1 5455 |
. . . . . 6
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26 | 24, 25 | spcev 2856 |
. . . . 5
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27 | 23, 26 | syl 14 |
. . . 4
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28 | 11, 27 | rexlimddv 2616 |
. . 3
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29 | nnex 8990 |
. . . . . 6
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30 | 29 | ssex 4167 |
. . . . 5
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31 | 30 | 3ad2ant1 1020 |
. . . 4
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32 | brdomg 6804 |
. . . 4
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33 | 31, 32 | syl 14 |
. . 3
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34 | 28, 33 | mpbird 167 |
. 2
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35 | endomtr 6846 |
. 2
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36 | 2, 34, 35 | sylancr 414 |
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-in1 615 ax-in2 616 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-13 2166 ax-14 2167 ax-ext 2175 ax-coll 4145 ax-sep 4148 ax-nul 4156 ax-pow 4204 ax-pr 4239 ax-un 4465 ax-setind 4570 ax-iinf 4621 ax-cnex 7965 ax-resscn 7966 ax-1cn 7967 ax-1re 7968 ax-icn 7969 ax-addcl 7970 ax-addrcl 7971 ax-mulcl 7972 ax-addcom 7974 ax-addass 7976 ax-distr 7978 ax-i2m1 7979 ax-0lt1 7980 ax-0id 7982 ax-rnegex 7983 ax-cnre 7985 ax-pre-ltirr 7986 ax-pre-ltwlin 7987 ax-pre-lttrn 7988 ax-pre-apti 7989 ax-pre-ltadd 7990 |
This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-nel 2460 df-ral 2477 df-rex 2478 df-reu 2479 df-rmo 2480 df-rab 2481 df-v 2762 df-sbc 2987 df-csb 3082 df-dif 3156 df-un 3158 df-in 3160 df-ss 3167 df-nul 3448 df-pw 3604 df-sn 3625 df-pr 3626 df-op 3628 df-uni 3837 df-int 3872 df-iun 3915 df-br 4031 df-opab 4092 df-mpt 4093 df-tr 4129 df-id 4325 df-po 4328 df-iso 4329 df-iord 4398 df-on 4400 df-ilim 4401 df-suc 4403 df-iom 4624 df-xp 4666 df-rel 4667 df-cnv 4668 df-co 4669 df-dm 4670 df-rn 4671 df-res 4672 df-ima 4673 df-iota 5216 df-fun 5257 df-fn 5258 df-f 5259 df-f1 5260 df-fo 5261 df-f1o 5262 df-fv 5263 df-isom 5264 df-riota 5874 df-ov 5922 df-oprab 5923 df-mpo 5924 df-1st 6195 df-2nd 6196 df-recs 6360 df-frec 6446 df-er 6589 df-en 6797 df-dom 6798 df-sup 7045 df-inf 7046 df-pnf 8058 df-mnf 8059 df-xr 8060 df-ltxr 8061 df-le 8062 df-sub 8194 df-neg 8195 df-inn 8985 df-n0 9244 df-z 9321 df-uz 9596 df-fz 10078 df-fzo 10212 df-seqfrec 10522 |
This theorem is referenced by: unbendc 12614 |
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