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Mirrors > Home > MPE Home > Th. List > Mathboxes > dibdmN | Structured version Visualization version GIF version |
Description: Domain of the partial isomorphism A. (Contributed by NM, 8-Mar-2014.) (New usage is discouraged.) |
Ref | Expression |
---|---|
dibfn.b | ⊢ 𝐵 = (Base‘𝐾) |
dibfn.l | ⊢ ≤ = (le‘𝐾) |
dibfn.h | ⊢ 𝐻 = (LHyp‘𝐾) |
dibfn.i | ⊢ 𝐼 = ((DIsoB‘𝐾)‘𝑊) |
Ref | Expression |
---|---|
dibdmN | ⊢ ((𝐾 ∈ 𝑉 ∧ 𝑊 ∈ 𝐻) → dom 𝐼 = {𝑥 ∈ 𝐵 ∣ 𝑥 ≤ 𝑊}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dibfn.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
2 | dibfn.l | . . 3 ⊢ ≤ = (le‘𝐾) | |
3 | dibfn.h | . . 3 ⊢ 𝐻 = (LHyp‘𝐾) | |
4 | dibfn.i | . . 3 ⊢ 𝐼 = ((DIsoB‘𝐾)‘𝑊) | |
5 | 1, 2, 3, 4 | dibfnN 38172 | . 2 ⊢ ((𝐾 ∈ 𝑉 ∧ 𝑊 ∈ 𝐻) → 𝐼 Fn {𝑥 ∈ 𝐵 ∣ 𝑥 ≤ 𝑊}) |
6 | fndm 6448 | . 2 ⊢ (𝐼 Fn {𝑥 ∈ 𝐵 ∣ 𝑥 ≤ 𝑊} → dom 𝐼 = {𝑥 ∈ 𝐵 ∣ 𝑥 ≤ 𝑊}) | |
7 | 5, 6 | syl 17 | 1 ⊢ ((𝐾 ∈ 𝑉 ∧ 𝑊 ∈ 𝐻) → dom 𝐼 = {𝑥 ∈ 𝐵 ∣ 𝑥 ≤ 𝑊}) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 = wceq 1528 ∈ wcel 2105 {crab 3139 class class class wbr 5057 dom cdm 5548 Fn wfn 6343 ‘cfv 6348 Basecbs 16471 lecple 16560 LHypclh 37000 DIsoBcdib 38154 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1787 ax-4 1801 ax-5 1902 ax-6 1961 ax-7 2006 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2151 ax-12 2167 ax-ext 2790 ax-rep 5181 ax-sep 5194 ax-nul 5201 ax-pow 5257 ax-pr 5320 ax-un 7450 |
This theorem depends on definitions: df-bi 208 df-an 397 df-or 842 df-3an 1081 df-tru 1531 df-ex 1772 df-nf 1776 df-sb 2061 df-mo 2615 df-eu 2647 df-clab 2797 df-cleq 2811 df-clel 2890 df-nfc 2960 df-ne 3014 df-ral 3140 df-rex 3141 df-reu 3142 df-rab 3144 df-v 3494 df-sbc 3770 df-csb 3881 df-dif 3936 df-un 3938 df-in 3940 df-ss 3949 df-nul 4289 df-if 4464 df-pw 4537 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4831 df-iun 4912 df-br 5058 df-opab 5120 df-mpt 5138 df-id 5453 df-xp 5554 df-rel 5555 df-cnv 5556 df-co 5557 df-dm 5558 df-rn 5559 df-res 5560 df-ima 5561 df-iota 6307 df-fun 6350 df-fn 6351 df-f 6352 df-f1 6353 df-fo 6354 df-f1o 6355 df-fv 6356 df-disoa 38045 df-dib 38155 |
This theorem is referenced by: dibglbN 38182 dibintclN 38183 dihglblem3N 38311 |
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