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Mirrors > Home > ILE Home > Th. List > infex2g | GIF version |
Description: Existence of infimum. (Contributed by Jim Kingdon, 1-Oct-2024.) |
Ref | Expression |
---|---|
infex2g | ⊢ (𝐴 ∈ 𝐶 → inf(𝐵, 𝐴, 𝑅) ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-inf 6962 | . 2 ⊢ inf(𝐵, 𝐴, 𝑅) = sup(𝐵, 𝐴, ◡𝑅) | |
2 | supex2g 7010 | . 2 ⊢ (𝐴 ∈ 𝐶 → sup(𝐵, 𝐴, ◡𝑅) ∈ V) | |
3 | 1, 2 | eqeltrid 2257 | 1 ⊢ (𝐴 ∈ 𝐶 → inf(𝐵, 𝐴, 𝑅) ∈ V) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 2141 Vcvv 2730 ◡ccnv 4610 supcsup 6959 infcinf 6960 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-un 4418 |
This theorem depends on definitions: df-bi 116 df-tru 1351 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-rex 2454 df-rab 2457 df-v 2732 df-in 3127 df-ss 3134 df-uni 3797 df-sup 6961 df-inf 6962 |
This theorem is referenced by: odzval 12195 |
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