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| Mirrors > Home > ILE Home > Th. List > ax-17 | Unicode version | ||
| Description: Axiom to quantify a
variable over a formula in which it does not occur.
Axiom C5 in [Megill] p. 444 (p. 11 of the
preprint). Also appears as
Axiom B6 (p. 75) of system S2 of [Tarski]
p. 77 and Axiom C5-1 of
[Monk2] p. 113.
(Contributed by NM, 5-Aug-1993.) |
| Ref | Expression |
|---|---|
| ax-17 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | wph |
. 2
| |
| 2 | vx |
. . 3
| |
| 3 | 1, 2 | wal 1396 |
. 2
|
| 4 | 1, 3 | wi 4 |
1
|
| Colors of variables: wff set class |
| This axiom is referenced by: a17d 1576 nfv 1577 exlimiv 1647 equid 1749 equsexvw 1777 ax16 1862 dvelimfALT2 1866 exlimdv 1868 ax11a2 1870 albidv 1873 exbidv 1874 ax11v 1876 ax11ev 1877 ax16i 1907 ax16ALT 1908 equvin 1912 19.9v 1920 19.21v 1922 alrimiv 1923 alrimdv 1925 alimdv 1928 eximdv 1929 19.23v 1932 pm11.53 1945 19.27v 1949 19.28v 1950 19.41v 1952 19.42v 1956 cbvalv 1967 cbvexv 1968 cbvexdh 1976 nexdv 1990 sbhb 1994 hbsbv 1995 sbco2vh 1999 nfsb 2000 equsb3lem 2004 equsb3 2005 sbn 2006 sbim 2007 sbor 2008 sban 2009 sbco3 2028 nfsbt 2030 sb9 2033 sbcom2v2 2040 sbcom2 2041 dfsb7 2045 sbid2v 2050 sbelx 2051 sbal 2054 sbal1 2056 sbex 2058 exsb 2062 dvelimALT 2064 dvelim 2071 dvelimor 2072 euf 2085 sb8euh 2103 euorv 2107 euex 2110 euanv 2138 mo4f 2141 moim 2145 moimv 2147 moanim 2155 mopick 2159 2eu4 2174 cleljust 2209 elsb1 2210 elsb2 2211 dveel1 2212 dveel2 2213 cleqh 2332 abeq2 2341 mpteq12 4192 bj-ex 16521 bj-inex 16664 |
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