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| Mirrors > Home > ILE Home > Th. List > comet | Unicode version | ||
| Description: The composition of an extended metric with a monotonic subadditive function is an extended metric. (Contributed by Mario Carneiro, 21-Mar-2015.) |
| Ref | Expression |
|---|---|
| comet.1 |
|
| comet.2 |
|
| comet.3 |
|
| comet.4 |
|
| comet.5 |
|
| Ref | Expression |
|---|---|
| comet |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xmetrel 15137 |
. . . 4
| |
| 2 | comet.1 |
. . . 4
| |
| 3 | relelfvdm 5680 |
. . . 4
| |
| 4 | 1, 2, 3 | sylancr 414 |
. . 3
|
| 5 | 4 | elexd 2817 |
. 2
|
| 6 | comet.2 |
. . 3
| |
| 7 | xmetf 15144 |
. . . . . 6
| |
| 8 | 2, 7 | syl 14 |
. . . . 5
|
| 9 | 8 | ffnd 5490 |
. . . 4
|
| 10 | xmetcl 15146 |
. . . . . . . 8
| |
| 11 | xmetge0 15159 |
. . . . . . . 8
| |
| 12 | elxrge0 10257 |
. . . . . . . 8
| |
| 13 | 10, 11, 12 | sylanbrc 417 |
. . . . . . 7
|
| 14 | 13 | 3expb 1231 |
. . . . . 6
|
| 15 | 2, 14 | sylan 283 |
. . . . 5
|
| 16 | 15 | ralrimivva 2615 |
. . . 4
|
| 17 | ffnov 6135 |
. . . 4
| |
| 18 | 9, 16, 17 | sylanbrc 417 |
. . 3
|
| 19 | fco 5507 |
. . 3
| |
| 20 | 6, 18, 19 | syl2anc 411 |
. 2
|
| 21 | opelxpi 4763 |
. . . . . 6
| |
| 22 | fvco3 5726 |
. . . . . 6
| |
| 23 | 8, 21, 22 | syl2an 289 |
. . . . 5
|
| 24 | df-ov 6031 |
. . . . 5
| |
| 25 | df-ov 6031 |
. . . . . 6
| |
| 26 | 25 | fveq2i 5651 |
. . . . 5
|
| 27 | 23, 24, 26 | 3eqtr4g 2289 |
. . . 4
|
| 28 | 27 | eqeq1d 2240 |
. . 3
|
| 29 | fveq2 5648 |
. . . . . 6
| |
| 30 | 29 | eqeq1d 2240 |
. . . . 5
|
| 31 | eqeq1 2238 |
. . . . 5
| |
| 32 | 30, 31 | bibi12d 235 |
. . . 4
|
| 33 | comet.3 |
. . . . . 6
| |
| 34 | 33 | ralrimiva 2606 |
. . . . 5
|
| 35 | 34 | adantr 276 |
. . . 4
|
| 36 | 32, 35, 15 | rspcdva 2916 |
. . 3
|
| 37 | xmeteq0 15153 |
. . . . 5
| |
| 38 | 37 | 3expb 1231 |
. . . 4
|
| 39 | 2, 38 | sylan 283 |
. . 3
|
| 40 | 28, 36, 39 | 3bitrd 214 |
. 2
|
| 41 | 6 | adantr 276 |
. . . . 5
|
| 42 | 15 | 3adantr3 1185 |
. . . . 5
|
| 43 | 41, 42 | ffvelcdmd 5791 |
. . . 4
|
| 44 | 18 | adantr 276 |
. . . . . . 7
|
| 45 | simpr3 1032 |
. . . . . . 7
| |
| 46 | simpr1 1030 |
. . . . . . 7
| |
| 47 | 44, 45, 46 | fovcdmd 6177 |
. . . . . 6
|
| 48 | simpr2 1031 |
. . . . . . 7
| |
| 49 | 44, 45, 48 | fovcdmd 6177 |
. . . . . 6
|
| 50 | ge0xaddcl 10262 |
. . . . . 6
| |
| 51 | 47, 49, 50 | syl2anc 411 |
. . . . 5
|
| 52 | 41, 51 | ffvelcdmd 5791 |
. . . 4
|
| 53 | 41, 47 | ffvelcdmd 5791 |
. . . . 5
|
| 54 | 41, 49 | ffvelcdmd 5791 |
. . . . 5
|
| 55 | 53, 54 | xaddcld 10163 |
. . . 4
|
| 56 | 3anrot 1010 |
. . . . . . 7
| |
| 57 | xmettri2 15155 |
. . . . . . 7
| |
| 58 | 56, 57 | sylan2br 288 |
. . . . . 6
|
| 59 | 2, 58 | sylan 283 |
. . . . 5
|
| 60 | comet.4 |
. . . . . . . 8
| |
| 61 | 60 | ralrimivva 2615 |
. . . . . . 7
|
| 62 | 61 | adantr 276 |
. . . . . 6
|
| 63 | breq1 4096 |
. . . . . . . 8
| |
| 64 | 29 | breq1d 4103 |
. . . . . . . 8
|
| 65 | 63, 64 | imbi12d 234 |
. . . . . . 7
|
| 66 | breq2 4097 |
. . . . . . . 8
| |
| 67 | fveq2 5648 |
. . . . . . . . 9
| |
| 68 | 67 | breq2d 4105 |
. . . . . . . 8
|
| 69 | 66, 68 | imbi12d 234 |
. . . . . . 7
|
| 70 | 65, 69 | rspc2va 2925 |
. . . . . 6
|
| 71 | 42, 51, 62, 70 | syl21anc 1273 |
. . . . 5
|
| 72 | 59, 71 | mpd 13 |
. . . 4
|
| 73 | comet.5 |
. . . . . . 7
| |
| 74 | 73 | ralrimivva 2615 |
. . . . . 6
|
| 75 | 74 | adantr 276 |
. . . . 5
|
| 76 | fvoveq1 6051 |
. . . . . . 7
| |
| 77 | fveq2 5648 |
. . . . . . . 8
| |
| 78 | 77 | oveq1d 6043 |
. . . . . . 7
|
| 79 | 76, 78 | breq12d 4106 |
. . . . . 6
|
| 80 | oveq2 6036 |
. . . . . . . 8
| |
| 81 | 80 | fveq2d 5652 |
. . . . . . 7
|
| 82 | fveq2 5648 |
. . . . . . . 8
| |
| 83 | 82 | oveq2d 6044 |
. . . . . . 7
|
| 84 | 81, 83 | breq12d 4106 |
. . . . . 6
|
| 85 | 79, 84 | rspc2va 2925 |
. . . . 5
|
| 86 | 47, 49, 75, 85 | syl21anc 1273 |
. . . 4
|
| 87 | 43, 52, 55, 72, 86 | xrletrd 10091 |
. . 3
|
| 88 | 27 | 3adantr3 1185 |
. . 3
|
| 89 | 8 | adantr 276 |
. . . . . 6
|
| 90 | 45, 46 | opelxpd 4764 |
. . . . . 6
|
| 91 | fvco3 5726 |
. . . . . 6
| |
| 92 | 89, 90, 91 | syl2anc 411 |
. . . . 5
|
| 93 | df-ov 6031 |
. . . . 5
| |
| 94 | df-ov 6031 |
. . . . . 6
| |
| 95 | 94 | fveq2i 5651 |
. . . . 5
|
| 96 | 92, 93, 95 | 3eqtr4g 2289 |
. . . 4
|
| 97 | 45, 48 | opelxpd 4764 |
. . . . . 6
|
| 98 | fvco3 5726 |
. . . . . 6
| |
| 99 | 89, 97, 98 | syl2anc 411 |
. . . . 5
|
| 100 | df-ov 6031 |
. . . . 5
| |
| 101 | df-ov 6031 |
. . . . . 6
| |
| 102 | 101 | fveq2i 5651 |
. . . . 5
|
| 103 | 99, 100, 102 | 3eqtr4g 2289 |
. . . 4
|
| 104 | 96, 103 | oveq12d 6046 |
. . 3
|
| 105 | 87, 88, 104 | 3brtr4d 4125 |
. 2
|
| 106 | 5, 20, 40, 105 | isxmetd 15141 |
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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulrcl 8174 ax-addcom 8175 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-i2m1 8180 ax-0lt1 8181 ax-1rid 8182 ax-0id 8183 ax-rnegex 8184 ax-precex 8185 ax-cnre 8186 ax-pre-ltirr 8187 ax-pre-ltwlin 8188 ax-pre-lttrn 8189 ax-pre-apti 8190 ax-pre-ltadd 8191 ax-pre-mulgt0 8192 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-if 3608 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-po 4399 df-iso 4400 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-map 6862 df-pnf 8258 df-mnf 8259 df-xr 8260 df-ltxr 8261 df-le 8262 df-sub 8394 df-neg 8395 df-2 9244 df-xadd 10052 df-icc 10174 df-xmet 14623 |
| This theorem is referenced by: bdxmet 15295 |
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