![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > funtopon | Structured version Visualization version GIF version |
Description: The class TopOn is a function. (Contributed by BJ, 29-Apr-2021.) |
Ref | Expression |
---|---|
funtopon | ⊢ Fun TopOn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-topon 22319 | . 2 ⊢ TopOn = (𝑦 ∈ V ↦ {𝑥 ∈ Top ∣ 𝑦 = ∪ 𝑥}) | |
2 | 1 | funmpt2 6567 | 1 ⊢ Fun TopOn |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1541 {crab 3425 Vcvv 3466 ∪ cuni 4892 Fun wfun 6517 Topctop 22301 TopOnctopon 22318 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2702 ax-sep 5283 ax-nul 5290 ax-pr 5411 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ral 3061 df-rex 3070 df-rab 3426 df-v 3468 df-dif 3938 df-un 3940 df-in 3942 df-ss 3952 df-nul 4310 df-if 4514 df-sn 4614 df-pr 4616 df-op 4620 df-br 5133 df-opab 5195 df-mpt 5216 df-id 5558 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-fun 6525 df-topon 22319 |
This theorem is referenced by: fntopon 22332 toprntopon 22333 |
Copyright terms: Public domain | W3C validator |