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| Description: Extract the second member of an ordered pair. |
| Ref | Expression |
|---|---|
| op1st.1 |
|
| op2n.2 |
|
| Ref | Expression |
|---|---|
| op2nd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2ndval 4088 |
. 2
| |
| 2 | op1st.1 |
. . 3
| |
| 3 | op2n.2 |
. . 3
| |
| 4 | 2, 3 | op2nda 3458 |
. 2
|
| 5 | 1, 4 | eqtr 1498 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: op2ndg 4094 2ndval2 4096 2nd2val 4102 sbcopeq1a 4117 csbopeq1a 4118 dfopab2 4119 dfoprab3 4120 dfoprab4 4122 seq11lem 6316 seq1suclem 6317 ruclem19 7529 ruclem21 7531 ruclem25 7535 xplmi 7970 xplm 7972 xpcn 7973 bcthlem32 8027 cnnvs 8307 cnnvnm 8308 abscn 8339 h2hsm 8839 h2hnm 8840 hhsssm 9125 hhssnm 9126 hhsssh2 9135 eloi 10630 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-9 967 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-sep 2708 ax-nul 2715 ax-pow 2748 ax-pr 2785 ax-un 2872 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-ral 1652 df-rex 1653 df-v 1815 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-nul 2284 df-pw 2406 df-sn 2416 df-pr 2417 df-op 2420 df-uni 2508 df-br 2625 df-opab 2672 df-id 2841 df-xp 3190 df-rel 3191 df-cnv 3192 df-co 3193 df-dm 3194 df-rn 3195 df-res 3196 df-ima 3197 df-fun 3198 df-fv 3204 df-2nd 4086 |