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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 10467 |
. . 3
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2 | 1 | ensymi 6809 |
. 2
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3 | breq1 4021 |
. . . . . . 7
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4 | 3 | rexbidv 2491 |
. . . . . 6
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5 | simp3 1001 |
. . . . . 6
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6 | 1nn 8961 |
. . . . . . 7
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7 | 6 | a1i 9 |
. . . . . 6
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8 | 4, 5, 7 | rspcdva 2861 |
. . . . 5
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9 | breq2 4022 |
. . . . . 6
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10 | 9 | cbvrexv 2719 |
. . . . 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 5920 |
. . . . . . . . . 10
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17 | 16 | ineq2d 3351 |
. . . . . . . . 9
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18 | 17 | infeq1d 7042 |
. . . . . . . 8
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19 | eqidd 2190 |
. . . . . . . 8
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20 | 18, 19 | cbvmpov 5977 |
. . . . . . 7
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21 | seqeq2 10482 |
. . . . . . 7
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22 | 20, 21 | ax-mp 5 |
. . . . . 6
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23 | 12, 13, 14, 15, 22 | nninfdclemf1 12506 |
. . . . 5
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24 | seqex 10480 |
. . . . . 6
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25 | f1eq1 5435 |
. . . . . 6
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26 | 24, 25 | spcev 2847 |
. . . . 5
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27 | 23, 26 | syl 14 |
. . . 4
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28 | 11, 27 | rexlimddv 2612 |
. . 3
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29 | nnex 8956 |
. . . . . 6
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30 | 29 | ssex 4155 |
. . . . 5
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31 | 30 | 3ad2ant1 1020 |
. . . 4
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32 | brdomg 6775 |
. . . 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 6817 |
. 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 2162 ax-14 2163 ax-ext 2171 ax-coll 4133 ax-sep 4136 ax-nul 4144 ax-pow 4192 ax-pr 4227 ax-un 4451 ax-setind 4554 ax-iinf 4605 ax-cnex 7933 ax-resscn 7934 ax-1cn 7935 ax-1re 7936 ax-icn 7937 ax-addcl 7938 ax-addrcl 7939 ax-mulcl 7940 ax-addcom 7942 ax-addass 7944 ax-distr 7946 ax-i2m1 7947 ax-0lt1 7948 ax-0id 7950 ax-rnegex 7951 ax-cnre 7953 ax-pre-ltirr 7954 ax-pre-ltwlin 7955 ax-pre-lttrn 7956 ax-pre-apti 7957 ax-pre-ltadd 7958 |
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 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ne 2361 df-nel 2456 df-ral 2473 df-rex 2474 df-reu 2475 df-rmo 2476 df-rab 2477 df-v 2754 df-sbc 2978 df-csb 3073 df-dif 3146 df-un 3148 df-in 3150 df-ss 3157 df-nul 3438 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-int 3860 df-iun 3903 df-br 4019 df-opab 4080 df-mpt 4081 df-tr 4117 df-id 4311 df-po 4314 df-iso 4315 df-iord 4384 df-on 4386 df-ilim 4387 df-suc 4389 df-iom 4608 df-xp 4650 df-rel 4651 df-cnv 4652 df-co 4653 df-dm 4654 df-rn 4655 df-res 4656 df-ima 4657 df-iota 5196 df-fun 5237 df-fn 5238 df-f 5239 df-f1 5240 df-fo 5241 df-f1o 5242 df-fv 5243 df-isom 5244 df-riota 5852 df-ov 5900 df-oprab 5901 df-mpo 5902 df-1st 6166 df-2nd 6167 df-recs 6331 df-frec 6417 df-er 6560 df-en 6768 df-dom 6769 df-sup 7014 df-inf 7015 df-pnf 8025 df-mnf 8026 df-xr 8027 df-ltxr 8028 df-le 8029 df-sub 8161 df-neg 8162 df-inn 8951 df-n0 9208 df-z 9285 df-uz 9560 df-fz 10041 df-fzo 10175 df-seqfrec 10479 |
This theorem is referenced by: unbendc 12508 |
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