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Mirrors > Home > NFE Home > Th. List > ssrelk | Unicode version |
Description: Subset for Kuratowski relationships. (Contributed by SF, 13-Jan-2015.) |
Ref | Expression |
---|---|
ssrelk |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssofss 4077 |
. 2
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2 | df-ral 2620 |
. . . 4
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3 | elvvk 4208 |
. . . . . . . 8
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4 | 3 | imbi1i 315 |
. . . . . . 7
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5 | 19.23vv 1892 |
. . . . . . 7
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6 | 4, 5 | bitr4i 243 |
. . . . . 6
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7 | 6 | albii 1566 |
. . . . 5
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8 | alrot3 1738 |
. . . . 5
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9 | 7, 8 | bitri 240 |
. . . 4
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10 | 2, 9 | bitri 240 |
. . 3
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11 | opkex 4114 |
. . . . 5
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12 | eleq1 2413 |
. . . . . 6
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13 | eleq1 2413 |
. . . . . 6
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14 | 12, 13 | imbi12d 311 |
. . . . 5
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15 | 11, 14 | ceqsalv 2886 |
. . . 4
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16 | 15 | 2albii 1567 |
. . 3
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17 | 10, 16 | bitri 240 |
. 2
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18 | 1, 17 | syl6bb 252 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1546 ax-5 1557 ax-17 1616 ax-9 1654 ax-8 1675 ax-6 1729 ax-7 1734 ax-11 1746 ax-12 1925 ax-ext 2334 ax-nin 4079 ax-sn 4088 |
This theorem depends on definitions: df-bi 177 df-or 359 df-an 360 df-nan 1288 df-tru 1319 df-ex 1542 df-nf 1545 df-sb 1649 df-clab 2340 df-cleq 2346 df-clel 2349 df-nfc 2479 df-ne 2519 df-ral 2620 df-v 2862 df-nin 3212 df-compl 3213 df-in 3214 df-un 3215 df-dif 3216 df-ss 3260 df-nul 3552 df-sn 3742 df-pr 3743 df-opk 4059 df-xpk 4186 |
This theorem is referenced by: elp6 4264 sikss1c1c 4268 ins2kss 4280 ins3kss 4281 |
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