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| Mirrors > Home > ILE Home > Th. List > nqex | Unicode version | ||
| Description: The class of positive fractions exists. (Contributed by NM, 16-Aug-1995.) (Revised by Mario Carneiro, 27-Apr-2013.) |
| Ref | Expression |
|---|---|
| nqex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-nqqs 7432 |
. 2
| |
| 2 | niex 7396 |
. . . 4
| |
| 3 | 2, 2 | xpex 4779 |
. . 3
|
| 4 | 3 | qsex 6660 |
. 2
|
| 5 | 1, 4 | eqeltri 2269 |
1
|
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