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Mirrors > Home > MPE Home > Th. List > elxp3 | Structured version Visualization version Unicode version |
Description: Membership in a Cartesian product. (Contributed by NM, 5-Mar-1995.) |
Ref | Expression |
---|---|
elxp3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elxp 4856 |
. 2
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2 | eqcom 2478 |
. . . 4
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3 | opelxp 4869 |
. . . 4
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4 | 2, 3 | anbi12i 711 |
. . 3
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5 | 4 | 2exbii 1727 |
. 2
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6 | 1, 5 | bitr4i 260 |
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 1677 ax-4 1690 ax-5 1766 ax-6 1813 ax-7 1859 ax-9 1913 ax-10 1932 ax-11 1937 ax-12 1950 ax-13 2104 ax-ext 2451 ax-sep 4518 ax-nul 4527 ax-pr 4639 |
This theorem depends on definitions: df-bi 190 df-or 377 df-an 378 df-3an 1009 df-tru 1455 df-ex 1672 df-nf 1676 df-sb 1806 df-clab 2458 df-cleq 2464 df-clel 2467 df-nfc 2601 df-ne 2643 df-ral 2761 df-rex 2762 df-rab 2765 df-v 3033 df-dif 3393 df-un 3395 df-in 3397 df-ss 3404 df-nul 3723 df-if 3873 df-sn 3960 df-pr 3962 df-op 3966 df-opab 4455 df-xp 4845 |
This theorem is referenced by: optocl 4916 unixp0 5377 |
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