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Mirrors > Home > ILE Home > Th. List > eqinfti | Unicode version |
Description: Sufficient condition for an element to be equal to the infimum. (Contributed by Jim Kingdon, 16-Dec-2021.) |
Ref | Expression |
---|---|
eqinfti.ti |
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Ref | Expression |
---|---|
eqinfti |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-inf 6986 |
. . 3
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2 | eqinfti.ti |
. . . . . 6
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3 | 2 | cnvti 7020 |
. . . . 5
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4 | 3 | eqsupti 6997 |
. . . 4
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5 | vex 2742 |
. . . . . . . . . . 11
![]() ![]() ![]() ![]() | |
6 | brcnvg 4810 |
. . . . . . . . . . . 12
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7 | 6 | bicomd 141 |
. . . . . . . . . . 11
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8 | 5, 7 | mpan2 425 |
. . . . . . . . . 10
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9 | 8 | notbid 667 |
. . . . . . . . 9
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10 | 9 | ralbidv 2477 |
. . . . . . . 8
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11 | brcnvg 4810 |
. . . . . . . . . . . 12
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
12 | 5, 11 | mpan 424 |
. . . . . . . . . . 11
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13 | 12 | bicomd 141 |
. . . . . . . . . 10
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14 | vex 2742 |
. . . . . . . . . . . . . 14
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15 | 5, 14 | brcnv 4812 |
. . . . . . . . . . . . 13
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16 | 15 | a1i 9 |
. . . . . . . . . . . 12
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17 | 16 | bicomd 141 |
. . . . . . . . . . 11
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18 | 17 | rexbidv 2478 |
. . . . . . . . . 10
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19 | 13, 18 | imbi12d 234 |
. . . . . . . . 9
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20 | 19 | ralbidv 2477 |
. . . . . . . 8
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21 | 10, 20 | anbi12d 473 |
. . . . . . 7
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22 | 21 | pm5.32i 454 |
. . . . . 6
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23 | 3anass 982 |
. . . . . 6
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24 | 3anass 982 |
. . . . . 6
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25 | 22, 23, 24 | 3bitr4i 212 |
. . . . 5
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26 | 25 | biimpi 120 |
. . . 4
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27 | 4, 26 | impel 280 |
. . 3
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28 | 1, 27 | eqtrid 2222 |
. 2
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29 | 28 | ex 115 |
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 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-14 2151 ax-ext 2159 ax-sep 4123 ax-pow 4176 ax-pr 4211 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2741 df-sbc 2965 df-un 3135 df-in 3137 df-ss 3144 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-br 4006 df-opab 4067 df-cnv 4636 df-iota 5180 df-riota 5833 df-sup 6985 df-inf 6986 |
This theorem is referenced by: eqinftid 7022 |
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