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Mirrors > Home > ILE Home > Th. List > lble | Unicode version |
Description: If a set of reals contains a lower bound, the lower bound is less than or equal to all members of the set. (Contributed by NM, 9-Oct-2005.) (Proof shortened by Mario Carneiro, 24-Dec-2016.) |
Ref | Expression |
---|---|
lble |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lbreu 8561 |
. . . . 5
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2 | nfcv 2240 |
. . . . . . 7
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3 | nfriota1 5669 |
. . . . . . . 8
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4 | nfcv 2240 |
. . . . . . . 8
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5 | nfcv 2240 |
. . . . . . . 8
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6 | 3, 4, 5 | nfbr 3919 |
. . . . . . 7
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7 | 2, 6 | nfralxy 2430 |
. . . . . 6
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8 | eqid 2100 |
. . . . . 6
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9 | nfra1 2425 |
. . . . . . . . 9
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10 | nfcv 2240 |
. . . . . . . . 9
![]() ![]() ![]() ![]() | |
11 | 9, 10 | nfriota 5671 |
. . . . . . . 8
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12 | 11 | nfeq2 2252 |
. . . . . . 7
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13 | breq1 3878 |
. . . . . . 7
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14 | 12, 13 | ralbid 2394 |
. . . . . 6
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15 | 7, 8, 14 | riotaprop 5685 |
. . . . 5
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16 | 1, 15 | syl 14 |
. . . 4
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17 | 16 | simprd 113 |
. . 3
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18 | nfcv 2240 |
. . . . 5
![]() ![]() ![]() ![]() | |
19 | nfcv 2240 |
. . . . 5
![]() ![]() ![]() ![]() | |
20 | 11, 18, 19 | nfbr 3919 |
. . . 4
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21 | breq2 3879 |
. . . 4
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22 | 20, 21 | rspc 2738 |
. . 3
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23 | 17, 22 | mpan9 277 |
. 2
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24 | 23 | 3impa 1144 |
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 105 ax-ia2 106 ax-ia3 107 ax-in1 584 ax-in2 585 ax-io 671 ax-5 1391 ax-7 1392 ax-gen 1393 ax-ie1 1437 ax-ie2 1438 ax-8 1450 ax-10 1451 ax-11 1452 ax-i12 1453 ax-bndl 1454 ax-4 1455 ax-13 1459 ax-14 1460 ax-17 1474 ax-i9 1478 ax-ial 1482 ax-i5r 1483 ax-ext 2082 ax-sep 3986 ax-pow 4038 ax-pr 4069 ax-un 4293 ax-setind 4390 ax-cnex 7586 ax-resscn 7587 ax-pre-ltirr 7607 ax-pre-apti 7610 |
This theorem depends on definitions: df-bi 116 df-3an 932 df-tru 1302 df-fal 1305 df-nf 1405 df-sb 1704 df-eu 1963 df-mo 1964 df-clab 2087 df-cleq 2093 df-clel 2096 df-nfc 2229 df-ne 2268 df-nel 2363 df-ral 2380 df-rex 2381 df-reu 2382 df-rmo 2383 df-rab 2384 df-v 2643 df-sbc 2863 df-dif 3023 df-un 3025 df-in 3027 df-ss 3034 df-pw 3459 df-sn 3480 df-pr 3481 df-op 3483 df-uni 3684 df-br 3876 df-opab 3930 df-xp 4483 df-cnv 4485 df-iota 5024 df-riota 5662 df-pnf 7674 df-mnf 7675 df-xr 7676 df-ltxr 7677 df-le 7678 |
This theorem is referenced by: lbinf 8564 lbinfle 8566 |
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