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Mirrors > Home > MPE Home > Th. List > Mathboxes > eliuniincex | Structured version Visualization version Unicode version |
Description: Counterexample to show that the additional conditions in eliuniin 39279 and eliuniin2 39303 are actually needed. Notice that the definition of is not even needed (it can be any class). (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
Ref | Expression |
---|---|
eliuniincex.1 | |
eliuniincex.2 | |
eliuniincex.3 | |
eliuniincex.4 |
Ref | Expression |
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eliuniincex |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eliuniincex.4 | . . 3 | |
2 | nvel 4797 | . . 3 | |
3 | 1, 2 | eqneltri 39246 | . 2 |
4 | 0ex 4790 | . . . . 5 | |
5 | 4 | snid 4208 | . . . 4 |
6 | eliuniincex.1 | . . . 4 | |
7 | 5, 6 | eleqtrri 2700 | . . 3 |
8 | ral0 4076 | . . 3 | |
9 | nfcv 2764 | . . . . 5 | |
10 | nfcv 2764 | . . . . . 6 | |
11 | eliuniincex.3 | . . . . . . 7 | |
12 | 11, 9 | nfcxfr 2762 | . . . . . 6 |
13 | 10, 12 | nfel 2777 | . . . . 5 |
14 | 9, 13 | nfral 2945 | . . . 4 |
15 | eliuniincex.2 | . . . . . 6 | |
16 | 15 | raleqi 3142 | . . . . 5 |
17 | 16 | a1i 11 | . . . 4 |
18 | 14, 17 | rspce 3304 | . . 3 |
19 | 7, 8, 18 | mp2an 708 | . 2 |
20 | pm3.22 465 | . . . 4 | |
21 | 20 | olcd 408 | . . 3 |
22 | xor 935 | . . 3 | |
23 | 21, 22 | sylibr 224 | . 2 |
24 | 3, 19, 23 | mp2an 708 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wb 196 wo 383 wa 384 wceq 1483 wcel 1990 wral 2912 wrex 2913 cvv 3200 c0 3915 csn 4177 |
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-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 |
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-nfc 2753 df-ral 2917 df-rex 2918 df-v 3202 df-dif 3577 df-nul 3916 df-sn 4178 |
This theorem is referenced by: (None) |
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