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Mirrors > Home > MPE Home > Th. List > elab | Structured version Visualization version Unicode version |
Description: Membership in a class abstraction, using implicit substitution. Compare Theorem 6.13 of [Quine] p. 44. (Contributed by NM, 1-Aug-1994.) |
Ref | Expression |
---|---|
elab.1 |
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elab.2 |
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Ref | Expression |
---|---|
elab |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv 1772 |
. 2
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2 | elab.1 |
. 2
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3 | elab.2 |
. 2
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4 | 1, 2, 3 | elabf 3196 |
1
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