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Mirrors > Home > MPE Home > Th. List > elsnres | Structured version Visualization version Unicode version |
Description: Membership in restriction to a singleton. (Contributed by Scott Fenton, 17-Mar-2011.) |
Ref | Expression |
---|---|
elsnres.1 |
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Ref | Expression |
---|---|
elsnres |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elres 5435 |
. 2
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2 | rexcom4 3225 |
. 2
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3 | elsnres.1 |
. . . 4
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4 | opeq1 4402 |
. . . . . 6
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5 | 4 | eqeq2d 2632 |
. . . . 5
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6 | 4 | eleq1d 2686 |
. . . . 5
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7 | 5, 6 | anbi12d 747 |
. . . 4
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8 | 3, 7 | rexsn 4223 |
. . 3
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9 | 8 | exbii 1774 |
. 2
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10 | 1, 2, 9 | 3bitri 286 |
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 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-opab 4713 df-xp 5120 df-rel 5121 df-res 5126 |
This theorem is referenced by: fvn0ssdmfun 6350 frxp 7287 |
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