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Mirrors > Home > ILE Home > Th. List > btwnzge0 | Unicode version |
Description: A real bounded between an integer and its successor is nonnegative iff the integer is nonnegative. Second half of Lemma 13-4.1 of [Gleason] p. 217. (Contributed by NM, 12-Mar-2005.) |
Ref | Expression |
---|---|
btwnzge0 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0red 7983 |
. . . 4
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2 | simplll 533 |
. . . 4
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3 | simplr 528 |
. . . . . . 7
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4 | 3 | zred 9400 |
. . . . . 6
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5 | 4 | adantr 276 |
. . . . 5
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6 | 1red 7997 |
. . . . 5
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7 | 5, 6 | readdcld 8012 |
. . . 4
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8 | simpr 110 |
. . . 4
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9 | simplrr 536 |
. . . 4
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10 | 1, 2, 7, 8, 9 | lelttrd 8107 |
. . 3
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11 | 0z 9289 |
. . . . 5
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12 | zleltp1 9333 |
. . . . 5
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13 | 11, 12 | mpan 424 |
. . . 4
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14 | 13 | ad3antlr 493 |
. . 3
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15 | 10, 14 | mpbird 167 |
. 2
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16 | 0red 7983 |
. . 3
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17 | 4 | adantr 276 |
. . 3
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18 | simplll 533 |
. . 3
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19 | simpr 110 |
. . 3
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20 | simplrl 535 |
. . 3
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21 | 16, 17, 18, 19, 20 | letrd 8106 |
. 2
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22 | 15, 21 | impbida 596 |
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 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2162 ax-14 2163 ax-ext 2171 ax-sep 4136 ax-pow 4189 ax-pr 4224 ax-un 4448 ax-setind 4551 ax-cnex 7927 ax-resscn 7928 ax-1cn 7929 ax-1re 7930 ax-icn 7931 ax-addcl 7932 ax-addrcl 7933 ax-mulcl 7934 ax-addcom 7936 ax-addass 7938 ax-distr 7940 ax-i2m1 7941 ax-0lt1 7942 ax-0id 7944 ax-rnegex 7945 ax-cnre 7947 ax-pre-ltirr 7948 ax-pre-ltwlin 7949 ax-pre-lttrn 7950 ax-pre-ltadd 7952 |
This theorem depends on definitions: df-bi 117 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ne 2361 df-nel 2456 df-ral 2473 df-rex 2474 df-reu 2475 df-rab 2477 df-v 2754 df-sbc 2978 df-dif 3146 df-un 3148 df-in 3150 df-ss 3157 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-int 3860 df-br 4019 df-opab 4080 df-id 4308 df-xp 4647 df-rel 4648 df-cnv 4649 df-co 4650 df-dm 4651 df-iota 5193 df-fun 5234 df-fv 5240 df-riota 5848 df-ov 5895 df-oprab 5896 df-mpo 5897 df-pnf 8019 df-mnf 8020 df-xr 8021 df-ltxr 8022 df-le 8023 df-sub 8155 df-neg 8156 df-inn 8945 df-n0 9202 df-z 9279 |
This theorem is referenced by: 2tnp1ge0ge0 10327 |
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