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Mirrors > Home > ILE Home > Th. List > lbreu | Unicode version |
Description: If a set of reals contains a lower bound, it contains a unique lower bound. (Contributed by NM, 9-Oct-2005.) |
Ref | Expression |
---|---|
lbreu |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | breq2 4002 |
. . . . . . . . 9
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2 | 1 | rspcv 2835 |
. . . . . . . 8
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3 | breq2 4002 |
. . . . . . . . 9
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4 | 3 | rspcv 2835 |
. . . . . . . 8
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5 | 2, 4 | im2anan9r 599 |
. . . . . . 7
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6 | ssel 3147 |
. . . . . . . . . . . 12
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7 | ssel 3147 |
. . . . . . . . . . . 12
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8 | 6, 7 | anim12d 335 |
. . . . . . . . . . 11
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9 | 8 | impcom 125 |
. . . . . . . . . 10
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10 | letri3 8012 |
. . . . . . . . . 10
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11 | 9, 10 | syl 14 |
. . . . . . . . 9
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12 | 11 | exbiri 382 |
. . . . . . . 8
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13 | 12 | com23 78 |
. . . . . . 7
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14 | 5, 13 | syld 45 |
. . . . . 6
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15 | 14 | com3r 79 |
. . . . 5
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16 | 15 | ralrimivv 2556 |
. . . 4
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17 | 16 | anim2i 342 |
. . 3
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18 | 17 | ancoms 268 |
. 2
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19 | breq1 4001 |
. . . 4
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20 | 19 | ralbidv 2475 |
. . 3
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21 | 20 | reu4 2929 |
. 2
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22 | 18, 21 | sylibr 134 |
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 1445 ax-7 1446 ax-gen 1447 ax-ie1 1491 ax-ie2 1492 ax-8 1502 ax-10 1503 ax-11 1504 ax-i12 1505 ax-bndl 1507 ax-4 1508 ax-17 1524 ax-i9 1528 ax-ial 1532 ax-i5r 1533 ax-13 2148 ax-14 2149 ax-ext 2157 ax-sep 4116 ax-pow 4169 ax-pr 4203 ax-un 4427 ax-setind 4530 ax-cnex 7877 ax-resscn 7878 ax-pre-ltirr 7898 ax-pre-apti 7901 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1459 df-sb 1761 df-eu 2027 df-mo 2028 df-clab 2162 df-cleq 2168 df-clel 2171 df-nfc 2306 df-ne 2346 df-nel 2441 df-ral 2458 df-rex 2459 df-reu 2460 df-rmo 2461 df-rab 2462 df-v 2737 df-dif 3129 df-un 3131 df-in 3133 df-ss 3140 df-pw 3574 df-sn 3595 df-pr 3596 df-op 3598 df-uni 3806 df-br 3999 df-opab 4060 df-xp 4626 df-cnv 4628 df-pnf 7968 df-mnf 7969 df-xr 7970 df-ltxr 7971 df-le 7972 |
This theorem is referenced by: lbcl 8874 lble 8875 |
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