| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > op2nd | Structured version Visualization version GIF version | ||
| Description: Extract the second member of an ordered pair. (Contributed by NM, 5-Oct-2004.) |
| Ref | Expression |
|---|---|
| op1st.1 | ⊢ 𝐴 ∈ V |
| op1st.2 | ⊢ 𝐵 ∈ V |
| Ref | Expression |
|---|---|
| op2nd | ⊢ (2nd ‘〈𝐴, 𝐵〉) = 𝐵 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2ndval 7974 | . 2 ⊢ (2nd ‘〈𝐴, 𝐵〉) = ∪ ran {〈𝐴, 𝐵〉} | |
| 2 | op1st.1 | . . 3 ⊢ 𝐴 ∈ V | |
| 3 | op1st.2 | . . 3 ⊢ 𝐵 ∈ V | |
| 4 | 2, 3 | op2nda 6204 | . 2 ⊢ ∪ ran {〈𝐴, 𝐵〉} = 𝐵 |
| 5 | 1, 4 | eqtri 2753 | 1 ⊢ (2nd ‘〈𝐴, 𝐵〉) = 𝐵 |
| Copyright terms: Public domain | W3C validator |