| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnenom 10686 |
. . 3
| |
| 2 | 1 | ensymi 6951 |
. 2
|
| 3 | breq1 4089 |
. . . . . . 7
| |
| 4 | 3 | rexbidv 2531 |
. . . . . 6
|
| 5 | simp3 1023 |
. . . . . 6
| |
| 6 | 1nn 9144 |
. . . . . . 7
| |
| 7 | 6 | a1i 9 |
. . . . . 6
|
| 8 | 4, 5, 7 | rspcdva 2913 |
. . . . 5
|
| 9 | breq2 4090 |
. . . . . 6
| |
| 10 | 9 | cbvrexv 2766 |
. . . . 5
|
| 11 | 8, 10 | sylib 122 |
. . . 4
|
| 12 | simpl1 1024 |
. . . . . 6
| |
| 13 | simpl2 1025 |
. . . . . 6
| |
| 14 | simpl3 1026 |
. . . . . 6
| |
| 15 | simpr 110 |
. . . . . 6
| |
| 16 | fvoveq1 6036 |
. . . . . . . . . 10
| |
| 17 | 16 | ineq2d 3406 |
. . . . . . . . 9
|
| 18 | 17 | infeq1d 7202 |
. . . . . . . 8
|
| 19 | eqidd 2230 |
. . . . . . . 8
| |
| 20 | 18, 19 | cbvmpov 6096 |
. . . . . . 7
|
| 21 | seqeq2 10703 |
. . . . . . 7
| |
| 22 | 20, 21 | ax-mp 5 |
. . . . . 6
|
| 23 | 12, 13, 14, 15, 22 | nninfdclemf1 13063 |
. . . . 5
|
| 24 | seqex 10701 |
. . . . . 6
| |
| 25 | f1eq1 5534 |
. . . . . 6
| |
| 26 | 24, 25 | spcev 2899 |
. . . . 5
|
| 27 | 23, 26 | syl 14 |
. . . 4
|
| 28 | 11, 27 | rexlimddv 2653 |
. . 3
|
| 29 | nnex 9139 |
. . . . . 6
| |
| 30 | 29 | ssex 4224 |
. . . . 5
|
| 31 | 30 | 3ad2ant1 1042 |
. . . 4
|
| 32 | brdomg 6914 |
. . . 4
| |
| 33 | 31, 32 | syl 14 |
. . 3
|
| 34 | 28, 33 | mpbird 167 |
. 2
|
| 35 | endomtr 6959 |
. 2
| |
| 36 | 2, 34, 35 | sylancr 414 |
1
|
| 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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4202 ax-sep 4205 ax-nul 4213 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-iinf 4684 ax-cnex 8113 ax-resscn 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-addcom 8122 ax-addass 8124 ax-distr 8126 ax-i2m1 8127 ax-0lt1 8128 ax-0id 8130 ax-rnegex 8131 ax-cnre 8133 ax-pre-ltirr 8134 ax-pre-ltwlin 8135 ax-pre-lttrn 8136 ax-pre-apti 8137 ax-pre-ltadd 8138 |
| This theorem depends on definitions: df-bi 117 df-dc 840 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rmo 2516 df-rab 2517 df-v 2802 df-sbc 3030 df-csb 3126 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-nul 3493 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-iun 3970 df-br 4087 df-opab 4149 df-mpt 4150 df-tr 4186 df-id 4388 df-po 4391 df-iso 4392 df-iord 4461 df-on 4463 df-ilim 4464 df-suc 4466 df-iom 4687 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-f1 5329 df-fo 5330 df-f1o 5331 df-fv 5332 df-isom 5333 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-1st 6298 df-2nd 6299 df-recs 6466 df-frec 6552 df-er 6697 df-en 6905 df-dom 6906 df-sup 7174 df-inf 7175 df-pnf 8206 df-mnf 8207 df-xr 8208 df-ltxr 8209 df-le 8210 df-sub 8342 df-neg 8343 df-inn 9134 df-n0 9393 df-z 9470 df-uz 9746 df-fz 10234 df-fzo 10368 df-seqfrec 10700 |
| This theorem is referenced by: unbendc 13065 |
| Copyright terms: Public domain | W3C validator |