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Mirrors > Home > ILE Home > Th. List > dfinfre | Unicode version |
Description: The infimum of a set of
reals ![]() |
Ref | Expression |
---|---|
dfinfre |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-inf 6492 |
. 2
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2 | df-sup 6491 |
. . 3
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3 | ssel2 3003 |
. . . . . . . . . 10
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4 | lenlt 7306 |
. . . . . . . . . . 11
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5 | vex 2613 |
. . . . . . . . . . . . 13
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6 | vex 2613 |
. . . . . . . . . . . . 13
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7 | 5, 6 | brcnv 4566 |
. . . . . . . . . . . 12
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8 | 7 | notbii 627 |
. . . . . . . . . . 11
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9 | 4, 8 | syl6rbbr 197 |
. . . . . . . . . 10
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10 | 3, 9 | sylan2 280 |
. . . . . . . . 9
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11 | 10 | ancoms 264 |
. . . . . . . 8
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12 | 11 | an32s 533 |
. . . . . . 7
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13 | 12 | ralbidva 2369 |
. . . . . 6
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14 | 6, 5 | brcnv 4566 |
. . . . . . . . 9
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15 | vex 2613 |
. . . . . . . . . . 11
![]() ![]() ![]() ![]() | |
16 | 6, 15 | brcnv 4566 |
. . . . . . . . . 10
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17 | 16 | rexbii 2378 |
. . . . . . . . 9
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18 | 14, 17 | imbi12i 237 |
. . . . . . . 8
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19 | 18 | ralbii 2377 |
. . . . . . 7
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20 | 19 | a1i 9 |
. . . . . 6
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21 | 13, 20 | anbi12d 457 |
. . . . 5
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22 | 21 | rabbidva 2598 |
. . . 4
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23 | 22 | unieqd 3632 |
. . 3
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24 | 2, 23 | syl5eq 2127 |
. 2
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25 | 1, 24 | syl5eq 2127 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2065 ax-sep 3916 ax-pow 3968 ax-pr 3992 |
This theorem depends on definitions: df-bi 115 df-3an 922 df-tru 1288 df-nf 1391 df-sb 1688 df-eu 1946 df-mo 1947 df-clab 2070 df-cleq 2076 df-clel 2079 df-nfc 2212 df-ral 2358 df-rex 2359 df-rab 2362 df-v 2612 df-dif 2984 df-un 2986 df-in 2988 df-ss 2995 df-pw 3402 df-sn 3422 df-pr 3423 df-op 3425 df-uni 3622 df-br 3806 df-opab 3860 df-xp 4397 df-cnv 4399 df-sup 6491 df-inf 6492 df-xr 7271 df-le 7273 |
This theorem is referenced by: (None) |
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