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Mirrors > Home > MPE Home > Th. List > difexg | Structured version Visualization version Unicode version |
Description: Existence of a difference. (Contributed by NM, 26-May-1998.) |
Ref | Expression |
---|---|
difexg |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | difss 3737 |
. 2
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2 | ssexg 4804 |
. 2
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3 | 1, 2 | mpan 706 |
1
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