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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 1371 |
. 2
|
| 4 | 1, 3 | wi 4 |
1
|
| Colors of variables: wff set class |
| This axiom is referenced by: a17d 1550 nfv 1551 exlimiv 1621 equid 1724 ax16 1836 dvelimfALT2 1840 exlimdv 1842 ax11a2 1844 albidv 1847 exbidv 1848 ax11v 1850 ax11ev 1851 ax16i 1881 ax16ALT 1882 equvin 1886 19.9v 1894 19.21v 1896 alrimiv 1897 alrimdv 1899 alimdv 1902 eximdv 1903 19.23v 1906 pm11.53 1919 19.27v 1923 19.28v 1924 19.41v 1926 19.42v 1930 cbvalv 1941 cbvexv 1942 cbvexdh 1950 nexdv 1964 sbhb 1968 hbsbv 1969 sbco2vh 1973 nfsb 1974 equsb3lem 1978 equsb3 1979 sbn 1980 sbim 1981 sbor 1982 sban 1983 sbco3 2002 nfsbt 2004 sb9 2007 sbcom2v2 2014 sbcom2 2015 dfsb7 2019 sbid2v 2024 sbelx 2025 sbal 2028 sbal1 2030 sbex 2032 exsb 2036 dvelimALT 2038 dvelim 2045 dvelimor 2046 euf 2059 sb8euh 2077 euorv 2081 euex 2084 euanv 2111 mo4f 2114 moim 2118 moimv 2120 moanim 2128 mopick 2132 2eu4 2147 cleljust 2182 elsb1 2183 elsb2 2184 dveel1 2185 dveel2 2186 cleqh 2305 abeq2 2314 mpteq12 4127 bj-ex 15698 bj-inex 15843 |
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