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Mirrors > Home > ILE Home > Th. List > albidv | GIF version |
Description: Formula-building rule for universal quantifier (deduction rule). (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
albidv.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
Ref | Expression |
---|---|
albidv | ⊢ (𝜑 → (∀𝑥𝜓 ↔ ∀𝑥𝜒)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-17 1459 | . 2 ⊢ (𝜑 → ∀𝑥𝜑) | |
2 | albidv.1 | . 2 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
3 | 1, 2 | albidh 1409 | 1 ⊢ (𝜑 → (∀𝑥𝜓 ↔ ∀𝑥𝜒)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ↔ wb 103 ∀wal 1282 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-gen 1378 ax-17 1459 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: ax11v 1748 2albidv 1788 sbal1yz 1918 eujust 1943 euf 1946 mo23 1982 axext3 2064 bm1.1 2066 eqeq1 2087 nfceqdf 2218 ralbidv2 2370 alexeq 2721 pm13.183 2732 eqeu 2762 mo2icl 2771 euind 2779 reuind 2795 cdeqal 2804 sbcal 2865 sbcalg 2866 sbcabel 2895 csbiebg 2945 ssconb 3105 reldisj 3295 sbcssg 3350 elint 3642 axsep2 3897 zfauscl 3898 bm1.3ii 3899 euotd 4009 freq1 4099 freq2 4101 eusv1 4202 ontr2exmid 4268 regexmid 4278 tfisi 4328 nnregexmid 4360 iota5 4907 sbcfung 4945 funimass4 5245 dffo3 5335 eufnfv 5410 dff13 5428 ssfiexmid 6361 domfiexmid 6363 diffitest 6371 findcard 6372 findcard2 6373 findcard2s 6374 fz1sbc 9113 frecuzrdgfn 9414 bdsep2 10677 bdsepnfALT 10680 bdzfauscl 10681 bdbm1.3ii 10682 bj-2inf 10733 bj-nn0sucALT 10773 strcoll2 10778 strcollnfALT 10781 |
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