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Mirrors > Home > MPE Home > Th. List > eqrel | Structured version Visualization version Unicode version |
Description: Extensionality principle for relations. Theorem 3.2(ii) of [Monk1] p. 33. (Contributed by NM, 2-Aug-1994.) |
Ref | Expression |
---|---|
eqrel |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssrel 5207 |
. . 3
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2 | ssrel 5207 |
. . 3
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3 | 1, 2 | bi2anan9 917 |
. 2
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4 | eqss 3618 |
. 2
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5 | 2albiim 1817 |
. 2
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6 | 3, 4, 5 | 3bitr4g 303 |
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 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-in 3581 df-ss 3588 df-opab 4713 df-xp 5120 df-rel 5121 |
This theorem is referenced by: eqrelriv 5213 eqrelrdv 5216 eqbrrdv 5217 eqrelrdv2 5219 opabid2 5251 reldm0 5343 iss 5447 asymref 5512 funssres 5930 fsn 6402 eqrelf 34020 iss2 34112 |
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