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Mirrors > Home > ILE Home > Th. List > op2nd | Unicode version |
Description: Extract the second member of an ordered pair. (Contributed by NM, 5-Oct-2004.) |
Ref | Expression |
---|---|
op1st.1 | |
op1st.2 |
Ref | Expression |
---|---|
op2nd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | op1st.1 | . . . 4 | |
2 | op1st.2 | . . . 4 | |
3 | opexg 4203 | . . . 4 | |
4 | 1, 2, 3 | mp2an 423 | . . 3 |
5 | 2ndvalg 6106 | . . 3 | |
6 | 4, 5 | ax-mp 5 | . 2 |
7 | 1, 2 | op2nda 5085 | . 2 |
8 | 6, 7 | eqtri 2185 | 1 |
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