Description: e210 without virtual deductions. (Contributed by Alan Sare, 14-Jul-2011) (Proof modification is discouraged.) (New usage is discouraged.)
Ref | Expression | ||
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Hypotheses | ee210.1 | |- ( ph -> ( ps -> ch ) ) |
|
ee210.2 | |- ( ph -> th ) |
||
ee210.3 | |- ta |
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ee210.4 | |- ( ch -> ( th -> ( ta -> et ) ) ) |
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Assertion | ee210 | |- ( ph -> ( ps -> et ) ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ee210.1 | |- ( ph -> ( ps -> ch ) ) |
|
2 | ee210.2 | |- ( ph -> th ) |
|
3 | ee210.3 | |- ta |
|
4 | ee210.4 | |- ( ch -> ( th -> ( ta -> et ) ) ) |
|
5 | 2 | a1d | |- ( ph -> ( ps -> th ) ) |
6 | 3 | a1i | |- ( ps -> ta ) |
7 | 6 | a1i | |- ( ph -> ( ps -> ta ) ) |
8 | 1 5 7 4 | ee222 | |- ( ph -> ( ps -> et ) ) |