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Mirrors > Home > MPE Home > Th. List > opelxp1 | Structured version Visualization version Unicode version |
Description: The first member of an ordered pair of classes in a Cartesian product belongs to first Cartesian product argument. (Contributed by NM, 28-May-2008.) (Revised by Mario Carneiro, 26-Apr-2015.) |
Ref | Expression |
---|---|
opelxp1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opelxp 5146 | . 2 | |
2 | 1 | simplbi 476 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wcel 1990 cop 4183 cxp 5112 |
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-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 |
This theorem is referenced by: otelxp1 5152 dff3 6372 ressnop0 6420 swoord1 7773 swoord2 7774 canthp1lem2 9475 ciclcl 16462 txcmplem1 21444 txlm 21451 dvbsss 23666 nvvcop 27449 nvvop 27464 prsdm 29960 linedegen 32250 opelopab3 33511 |
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