| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > funopabeq | GIF version | ||
| Description: A class of ordered pairs of values is a function. (Contributed by NM, 14-Nov-1995.) |
| Ref | Expression |
|---|---|
| funopabeq | ⊢ Fun {〈𝑥, 𝑦〉 ∣ 𝑦 = 𝐴} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funopab 5294 | . 2 ⊢ (Fun {〈𝑥, 𝑦〉 ∣ 𝑦 = 𝐴} ↔ ∀𝑥∃*𝑦 𝑦 = 𝐴) | |
| 2 | moeq 2939 | . 2 ⊢ ∃*𝑦 𝑦 = 𝐴 | |
| 3 | 1, 2 | mpgbir 1467 | 1 ⊢ Fun {〈𝑥, 𝑦〉 ∣ 𝑦 = 𝐴} |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1364 ∃*wmo 2046 {copab 4094 Fun wfun 5253 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-14 2170 ax-ext 2178 ax-sep 4152 ax-pow 4208 ax-pr 4243 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-v 2765 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-br 4035 df-opab 4096 df-id 4329 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-fun 5261 |
| This theorem is referenced by: funopab4 5296 |
| Copyright terms: Public domain | W3C validator |