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Mirrors > Home > ILE Home > Th. List > r19.21bi | Unicode version |
Description: Inference from Theorem 19.21 of [Margaris] p. 90. (Restricted quantifier version.) (Contributed by NM, 20-Nov-1994.) |
Ref | Expression |
---|---|
r19.21bi.1 |
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Ref | Expression |
---|---|
r19.21bi |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | r19.21bi.1 |
. . . 4
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2 | df-ral 2460 |
. . . 4
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3 | 1, 2 | sylib 122 |
. . 3
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4 | 3 | 19.21bi 1558 |
. 2
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5 | 4 | imp 124 |
1
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