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Mirrors > Home > MPE Home > Th. List > ralnex | Structured version Visualization version Unicode version |
Description: Relationship between restricted universal and existential quantifiers. (Contributed by NM, 21-Jan-1997.) (Proof shortened by BJ, 16-Jul-2021.) |
Ref | Expression |
---|---|
ralnex |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | raln 2991 |
. 2
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2 | alnex 1706 |
. . 3
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3 | df-rex 2918 |
. . 3
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4 | 2, 3 | xchbinxr 325 |
. 2
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5 | 1, 4 | bitri 264 |
1
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