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| Description: Two ways to express that
a sequence meets the Cauchy criterion. Remark
in [Gleason] p. 181. |
| Ref | Expression |
|---|---|
| cau2.1 |
|
| cau2.2 |
|
| Ref | Expression |
|---|---|
| cau2i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cau2.2 |
. . . . . . . . . . . 12
| |
| 2 | 1 | imp 489 |
. . . . . . . . . . 11
|
| 3 | fveq2 4804 |
. . . . . . . . . . . . . . . . . 18
| |
| 4 | 3 | opreq2d 5033 |
. . . . . . . . . . . . . . . . 17
|
| 5 | cau2.1 |
. . . . . . . . . . . . . . . . . . 19
| |
| 6 | 5 | ffvelrni 4917 |
. . . . . . . . . . . . . . . . . 18
|
| 7 | subid 7150 |
. . . . . . . . . . . . . . . . . 18
| |
| 8 | 6, 7 | syl 13 |
. . . . . . . . . . . . . . . . 17
|
| 9 | 4, 8 | sylan9eqr 2228 |
. . . . . . . . . . . . . . . 16
|
| 10 | 9 | fveq2d 4808 |
. . . . . . . . . . . . . . 15
|
| 11 | abs0 8629 |
. . . . . . . . . . . . . . 15
| |
| 12 | 10, 11 | syl6eq 2222 |
. . . . . . . . . . . . . 14
|
| 13 | 12 | breq1d 3549 |
. . . . . . . . . . . . 13
|
| 14 | 13 | biimprcd 247 |
. . . . . . . . . . . 12
|
| 15 | 14 | exp3a 496 |
. . . . . . . . . . 11
|
| 16 | 2, 15 | syl 13 |
. . . . . . . . . 10
|
| 17 | 16 | imp 489 |
. . . . . . . . 9
|
| 18 | 17 | adantlr 834 |
. . . . . . . 8
|
| 19 | 18 | biantrud 1001 |
. . . . . . 7
|
| 20 | jaob 879 |
. . . . . . 7
| |
| 21 | 19, 20 | syl6bbr 326 |
. . . . . 6
|
| 22 | nnre 7547 |
. . . . . . . . 9
| |
| 23 | nnre 7547 |
. . . . . . . . 9
| |
| 24 | leloe 6979 |
. . . . . . . . 9
| |
| 25 | 22, 23, 24 | syl2an 699 |
. . . . . . . 8
|
| 26 | 25 | adantll 832 |
. . . . . . 7
|
| 27 | 26 | imbi1d 381 |
. . . . . 6
|
| 28 | 21, 27 | bitr4d 315 |
. . . . 5
|
| 29 | 28 | ralbidva 2399 |
. . . 4
|
| 30 | 29 | rexbidva 2400 |
. . 3
|
| 31 | 30 | pm5.74da 803 |
. 2
|
| 32 | 31 | ralbiia 2413 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1621 ax-gen 1622 ax-8 1623 ax-9 1624 ax-10 1625 ax-11 1626 ax-12 1627 ax-13 1628 ax-14 1629 ax-17 1634 ax-4 1637 ax-5o 1639 ax-6o 1642 ax-9o 1792 ax-10o 1810 ax-16 1883 ax-11o 1893 ax-ext 2152 ax-rep 3628 ax-sep 3638 ax-nul 3645 ax-pow 3681 ax-pr 3719 ax-un 3961 ax-cnex 6885 ax-resscn 6886 ax-1cn 6887 ax-icn 6888 ax-addcl 6889 ax-addrcl 6890 ax-mulcl 6891 ax-mulrcl 6892 ax-mulcom 6893 ax-addass 6894 ax-mulass 6895 ax-distr 6896 ax-i2m1 6897 ax-1ne0 6898 ax-1rid 6899 ax-rnegex 6900 ax-rrecex 6901 ax-cnre 6902 ax-pre-lttri 6903 ax-pre-lttrn 6904 ax-pre-ltadd 6905 ax-pre-mulgt0 6906 ax-pre-sup 6907 ax-mulopr 6909 |
| This theorem depends on definitions: df-bi 232 df-or 434 df-an 435 df-3or 1131 df-3an 1132 df-ex 1645 df-sb 1845 df-eu 2070 df-mo 2071 df-clab 2158 df-cleq 2163 df-clel 2166 df-ne 2297 df-nel 2298 df-ral 2389 df-rex 2390 df-reu 2391 df-rab 2392 df-v 2571 df-sbc 2731 df-csb 2806 df-dif 2862 df-un 2864 df-in 2866 df-ss 2868 df-pss 2870 df-nul 3115 df-if 3213 df-pw 3261 df-sn 3274 df-pr 3275 df-tp 3277 df-op 3278 df-uni 3399 df-int 3433 df-iun 3470 df-br 3540 df-opab 3598 df-tr 3612 df-eprel 3776 df-id 3779 df-po 3784 df-so 3796 df-fr 3814 df-we 3830 df-ord 3846 df-on 3847 df-lim 3848 df-suc 3849 df-om 4118 df-xp 4165 df-rel 4166 df-cnv 4167 df-co 4168 df-dm 4169 df-rn 4170 df-res 4171 df-ima 4172 df-fun 4173 df-fn 4174 df-f 4175 df-f1 4176 df-fo 4177 df-f1o 4178 df-fv 4179 df-opr 5022 df-oprab 5023 df-mpt 5138 df-1st 5166 df-2nd 5167 df-iota 5259 df-rdg 5344 df-er 5519 df-en 5631 df-dom 5632 df-sdom 5633 df-undef 5769 df-riota 5773 df-sup 5932 df-pnf 6948 df-mnf 6949 df-xr 6950 df-ltxr 6951 df-le 6952 df-sub 7111 df-neg 7113 df-div 7325 df-n 7543 df-2 7589 df-n0 7761 df-z 7798 df-seq1 8210 df-exp 8312 df-sqr 8420 df-re 8501 df-im 8502 df-cj 8503 df-abs 8504 |