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Mirrors > Home > MPE Home > Th. List > ifex | Structured version Visualization version Unicode version |
Description: Conditional operator existence. (Contributed by NM, 2-Sep-2004.) |
Ref | Expression |
---|---|
dedex.1 |
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dedex.2 |
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Ref | Expression |
---|---|
ifex |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dedex.1 |
. 2
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2 | dedex.2 |
. 2
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3 | 1, 2 | keepel 4155 |
1
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