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Mirrors > Home > ILE Home > Th. List > exmidontriimlem1 | Unicode version |
Description: Lemma for exmidontriim 7285. A variation of r19.30dc 2641. (Contributed by Jim Kingdon, 12-Aug-2024.) |
Ref | Expression |
---|---|
exmidontriimlem1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3orass 983 |
. . . . . . . 8
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2 | 1 | biimpi 120 |
. . . . . . 7
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3 | 2 | orcomd 730 |
. . . . . 6
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4 | 3 | ralimi 2557 |
. . . . 5
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5 | exmidexmid 4225 |
. . . . 5
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6 | r19.30dc 2641 |
. . . . 5
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7 | 4, 5, 6 | syl2an 289 |
. . . 4
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8 | 7 | orcomd 730 |
. . 3
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9 | simpr 110 |
. . . . . 6
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10 | simplr 528 |
. . . . . 6
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11 | orcom 729 |
. . . . . . . . . 10
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12 | 11 | ralbii 2500 |
. . . . . . . . 9
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13 | 12 | biimpi 120 |
. . . . . . . 8
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14 | exmidexmid 4225 |
. . . . . . . 8
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15 | r19.30dc 2641 |
. . . . . . . 8
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16 | 13, 14, 15 | syl2an 289 |
. . . . . . 7
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17 | 16 | orcomd 730 |
. . . . . 6
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18 | 9, 10, 17 | syl2anc 411 |
. . . . 5
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19 | 18 | ex 115 |
. . . 4
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20 | 19 | orim2d 789 |
. . 3
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21 | 8, 20 | mpd 13 |
. 2
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22 | 3orass 983 |
. 2
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23 | 21, 22 | 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 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-14 2167 ax-ext 2175 ax-sep 4147 ax-nul 4155 ax-pow 4203 |
This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-rab 2481 df-v 2762 df-dif 3155 df-in 3159 df-ss 3166 df-nul 3447 df-pw 3603 df-sn 3624 df-exmid 4224 |
This theorem is referenced by: exmidontriimlem2 7282 |
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