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Mirrors > Home > ILE Home > Th. List > ssdomg | Unicode version |
Description: A set dominates its subsets. Theorem 16 of [Suppes] p. 94. (Contributed by NM, 19-Jun-1998.) (Revised by Mario Carneiro, 24-Jun-2015.) |
Ref | Expression |
---|---|
ssdomg |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssexg 3896 |
. . 3
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2 | simpr 103 |
. . 3
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3 | f1oi 5164 |
. . . . . . . . . 10
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4 | dff1o3 5132 |
. . . . . . . . . 10
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5 | 3, 4 | mpbi 133 |
. . . . . . . . 9
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6 | 5 | simpli 104 |
. . . . . . . 8
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7 | fof 5106 |
. . . . . . . 8
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8 | 6, 7 | ax-mp 7 |
. . . . . . 7
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9 | fss 5054 |
. . . . . . 7
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10 | 8, 9 | mpan 400 |
. . . . . 6
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11 | funi 4932 |
. . . . . . . 8
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12 | cnvi 4728 |
. . . . . . . . 9
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13 | 12 | funeqi 4922 |
. . . . . . . 8
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14 | 11, 13 | mpbir 134 |
. . . . . . 7
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15 | funres11 4971 |
. . . . . . 7
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16 | 14, 15 | ax-mp 7 |
. . . . . 6
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17 | 10, 16 | jctir 296 |
. . . . 5
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18 | df-f1 4907 |
. . . . 5
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19 | 17, 18 | sylibr 137 |
. . . 4
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20 | 19 | adantr 261 |
. . 3
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21 | f1dom2g 6236 |
. . 3
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22 | 1, 2, 20, 21 | syl3anc 1135 |
. 2
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23 | 22 | expcom 109 |
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 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-13 1404 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-pow 3927 ax-pr 3944 ax-un 4170 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-eu 1903 df-mo 1904 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-v 2559 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-uni 3581 df-br 3765 df-opab 3819 df-id 4030 df-xp 4351 df-rel 4352 df-cnv 4353 df-co 4354 df-dm 4355 df-rn 4356 df-res 4357 df-ima 4358 df-fun 4904 df-fn 4905 df-f 4906 df-f1 4907 df-fo 4908 df-f1o 4909 df-dom 6223 |
This theorem is referenced by: xpdom3m 6308 phplem4dom 6324 nndomo 6326 phpm 6327 |
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