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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 1362 |
. 2
|
| 4 | 1, 3 | wi 4 |
1
|
| Colors of variables: wff set class |
| This axiom is referenced by: a17d 1541 nfv 1542 exlimiv 1612 equid 1715 ax16 1827 dvelimfALT2 1831 exlimdv 1833 ax11a2 1835 albidv 1838 exbidv 1839 ax11v 1841 ax11ev 1842 ax16i 1872 ax16ALT 1873 equvin 1877 19.9v 1885 19.21v 1887 alrimiv 1888 alrimdv 1890 alimdv 1893 eximdv 1894 19.23v 1897 pm11.53 1910 19.27v 1914 19.28v 1915 19.41v 1917 19.42v 1921 cbvalv 1932 cbvexv 1933 cbvexdh 1941 nexdv 1955 sbhb 1959 hbsbv 1960 sbco2vh 1964 nfsb 1965 equsb3lem 1969 equsb3 1970 sbn 1971 sbim 1972 sbor 1973 sban 1974 sbco3 1993 nfsbt 1995 sb9 1998 sbcom2v2 2005 sbcom2 2006 dfsb7 2010 sbid2v 2015 sbelx 2016 sbal 2019 sbal1 2021 sbex 2023 exsb 2027 dvelimALT 2029 dvelim 2036 dvelimor 2037 euf 2050 sb8euh 2068 euorv 2072 euex 2075 euanv 2102 mo4f 2105 moim 2109 moimv 2111 moanim 2119 mopick 2123 2eu4 2138 cleljust 2173 elsb1 2174 elsb2 2175 dveel1 2176 dveel2 2177 cleqh 2296 abeq2 2305 mpteq12 4116 bj-ex 15408 bj-inex 15553 |
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