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| Mirrors > Home > MPE Home > Th. List > nfe1 | Structured version Visualization version GIF version | ||
| Description: The setvar 𝑥 is not free in ∃𝑥𝜑. (Contributed by Mario Carneiro, 11-Aug-2016.) |
| Ref | Expression |
|---|---|
| nfe1 | ⊢ Ⅎ𝑥∃𝑥𝜑 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hbe1 2149 | . 2 ⊢ (∃𝑥𝜑 → ∀𝑥∃𝑥𝜑) | |
| 2 | 1 | nf5i 2152 | 1 ⊢ Ⅎ𝑥∃𝑥𝜑 |
| Colors of variables: wff setvar class |
| Syntax hints: ∃wex 1781 Ⅎwnf 1785 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-10 2147 |
| This theorem depends on definitions: df-bi 207 df-ex 1782 df-nf 1786 |
| This theorem is referenced by: nfa1 2157 nfnf1 2160 sbalex 2250 nf6 2290 exdistrf 2451 nfeu1 2589 euor2 2613 2moexv 2627 moexexvw 2628 2moswapv 2629 2euexv 2631 eupicka 2634 mopick2 2637 moexex 2638 2moex 2640 2euex 2641 2moswap 2644 2mo 2648 2eu7 2658 2eu8 2659 nfre1 3262 ceqsexg 3595 morex 3665 intab 4920 nfopab1 5155 nfopab2 5156 axrep1 5213 axrep2 5215 axrep3 5216 axrep4OLD 5219 eusv2nf 5337 copsexgwOLD 5444 copsexg 5445 copsex2t 5446 mosubopt 5464 dfid3 5529 dmcossOLD 5931 imadif 6582 oprabidw 7398 nfoprab1 7428 nfoprab2 7429 nfoprab3 7430 zfcndrep 10537 zfcndpow 10539 zfcndreg 10540 zfcndinf 10541 reclem2pr 10971 ex-natded9.26 30489 brabgaf 32679 bnj607 35058 bnj849 35067 bnj1398 35176 bnj1449 35190 finminlem 36500 exisym1 36606 bj-alexbiex 36996 bj-exexbiex 36997 bj-biexal2 37003 bj-biexex 37006 bj-sbf3 37146 bj-axseprep 37381 bj-axreprepsep 37382 copsex2d 37453 sbexi 38434 ac6s6 38493 nfe2 42654 e2ebind 44990 e2ebindVD 45338 e2ebindALT 45355 stoweidlem57 46485 ovncvrrp 46992 ich2ex 47928 ichreuopeq 47933 reuopreuprim 47986 pgind 50192 |
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