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Mirrors > Home > ILE Home > Th. List > xnegcl | Unicode version |
Description: Closure of extended real negative. (Contributed by Mario Carneiro, 20-Aug-2015.) |
Ref | Expression |
---|---|
xnegcl |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elxr 9812 |
. 2
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2 | rexneg 9866 |
. . . . 5
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3 | renegcl 8253 |
. . . . 5
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4 | 2, 3 | eqeltrd 2266 |
. . . 4
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5 | 4 | rexrd 8042 |
. . 3
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6 | xnegeq 9863 |
. . . 4
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7 | xnegpnf 9864 |
. . . . 5
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8 | mnfxr 8049 |
. . . . 5
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9 | 7, 8 | eqeltri 2262 |
. . . 4
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10 | 6, 9 | eqeltrdi 2280 |
. . 3
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11 | xnegeq 9863 |
. . . 4
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12 | xnegmnf 9865 |
. . . . 5
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13 | pnfxr 8045 |
. . . . 5
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14 | 12, 13 | eqeltri 2262 |
. . . 4
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15 | 11, 14 | eqeltrdi 2280 |
. . 3
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16 | 5, 10, 15 | 3jaoi 1314 |
. 2
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17 | 1, 16 | sylbi 121 |
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 4139 ax-pow 4195 ax-pr 4230 ax-un 4454 ax-setind 4557 ax-cnex 7937 ax-resscn 7938 ax-1cn 7939 ax-icn 7941 ax-addcl 7942 ax-addrcl 7943 ax-mulcl 7944 ax-addcom 7946 ax-addass 7948 ax-distr 7950 ax-i2m1 7951 ax-0id 7954 ax-rnegex 7955 ax-cnre 7957 |
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-if 3550 df-pw 3595 df-sn 3616 df-pr 3617 df-op 3619 df-uni 3828 df-br 4022 df-opab 4083 df-id 4314 df-xp 4653 df-rel 4654 df-cnv 4655 df-co 4656 df-dm 4657 df-iota 5199 df-fun 5240 df-fv 5246 df-riota 5855 df-ov 5903 df-oprab 5904 df-mpo 5905 df-pnf 8029 df-mnf 8030 df-xr 8031 df-sub 8165 df-neg 8166 df-xneg 9808 |
This theorem is referenced by: xltneg 9872 xleneg 9873 xnegcld 9891 xnegdi 9904 xaddass2 9906 xleadd1 9911 xsubge0 9917 xrnegiso 11311 xrminmax 11314 xrmincl 11315 xrmin1inf 11316 xrmin2inf 11317 xrlemininf 11320 xrminltinf 11321 |
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