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Mirrors > Home > ILE Home > Th. List > relssres | Unicode version |
Description: Simplification law for restriction. (Contributed by NM, 16-Aug-1994.) |
Ref | Expression |
---|---|
relssres |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 102 |
. . . 4
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2 | vex 2554 |
. . . . . . . . 9
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3 | vex 2554 |
. . . . . . . . 9
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4 | 2, 3 | opeldm 4481 |
. . . . . . . 8
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5 | ssel 2933 |
. . . . . . . 8
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6 | 4, 5 | syl5 28 |
. . . . . . 7
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7 | 6 | ancld 308 |
. . . . . 6
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8 | 3 | opelres 4560 |
. . . . . 6
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9 | 7, 8 | syl6ibr 151 |
. . . . 5
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10 | 9 | adantl 262 |
. . . 4
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11 | 1, 10 | relssdv 4375 |
. . 3
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12 | resss 4578 |
. . 3
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13 | 11, 12 | jctil 295 |
. 2
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14 | eqss 2954 |
. 2
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15 | 13, 14 | sylibr 137 |
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 629 ax-5 1333 ax-7 1334 ax-gen 1335 ax-ie1 1379 ax-ie2 1380 ax-8 1392 ax-10 1393 ax-11 1394 ax-i12 1395 ax-bndl 1396 ax-4 1397 ax-14 1402 ax-17 1416 ax-i9 1420 ax-ial 1424 ax-i5r 1425 ax-ext 2019 ax-sep 3866 ax-pow 3918 ax-pr 3935 |
This theorem depends on definitions: df-bi 110 df-3an 886 df-tru 1245 df-nf 1347 df-sb 1643 df-clab 2024 df-cleq 2030 df-clel 2033 df-nfc 2164 df-ral 2305 df-rex 2306 df-v 2553 df-un 2916 df-in 2918 df-ss 2925 df-pw 3353 df-sn 3373 df-pr 3374 df-op 3376 df-br 3756 df-opab 3810 df-xp 4294 df-rel 4295 df-dm 4298 df-res 4300 |
This theorem is referenced by: resdm 4592 resid 4605 fnresdm 4951 f1ompt 5263 |
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