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Mirrors > Home > MPE Home > Th. List > Mathboxes > islvol | Structured version Visualization version GIF version |
Description: The predicate "is a 3-dim lattice volume". (Contributed by NM, 1-Jul-2012.) |
Ref | Expression |
---|---|
lvolset.b | ⊢ 𝐵 = (Base‘𝐾) |
lvolset.c | ⊢ 𝐶 = ( ⋖ ‘𝐾) |
lvolset.p | ⊢ 𝑃 = (LPlanes‘𝐾) |
lvolset.v | ⊢ 𝑉 = (LVols‘𝐾) |
Ref | Expression |
---|---|
islvol | ⊢ (𝐾 ∈ 𝐴 → (𝑋 ∈ 𝑉 ↔ (𝑋 ∈ 𝐵 ∧ ∃𝑦 ∈ 𝑃 𝑦𝐶𝑋))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lvolset.b | . . . 4 ⊢ 𝐵 = (Base‘𝐾) | |
2 | lvolset.c | . . . 4 ⊢ 𝐶 = ( ⋖ ‘𝐾) | |
3 | lvolset.p | . . . 4 ⊢ 𝑃 = (LPlanes‘𝐾) | |
4 | lvolset.v | . . . 4 ⊢ 𝑉 = (LVols‘𝐾) | |
5 | 1, 2, 3, 4 | lvolset 34858 | . . 3 ⊢ (𝐾 ∈ 𝐴 → 𝑉 = {𝑥 ∈ 𝐵 ∣ ∃𝑦 ∈ 𝑃 𝑦𝐶𝑥}) |
6 | 5 | eleq2d 2687 | . 2 ⊢ (𝐾 ∈ 𝐴 → (𝑋 ∈ 𝑉 ↔ 𝑋 ∈ {𝑥 ∈ 𝐵 ∣ ∃𝑦 ∈ 𝑃 𝑦𝐶𝑥})) |
7 | breq2 4657 | . . . 4 ⊢ (𝑥 = 𝑋 → (𝑦𝐶𝑥 ↔ 𝑦𝐶𝑋)) | |
8 | 7 | rexbidv 3052 | . . 3 ⊢ (𝑥 = 𝑋 → (∃𝑦 ∈ 𝑃 𝑦𝐶𝑥 ↔ ∃𝑦 ∈ 𝑃 𝑦𝐶𝑋)) |
9 | 8 | elrab 3363 | . 2 ⊢ (𝑋 ∈ {𝑥 ∈ 𝐵 ∣ ∃𝑦 ∈ 𝑃 𝑦𝐶𝑥} ↔ (𝑋 ∈ 𝐵 ∧ ∃𝑦 ∈ 𝑃 𝑦𝐶𝑋)) |
10 | 6, 9 | syl6bb 276 | 1 ⊢ (𝐾 ∈ 𝐴 → (𝑋 ∈ 𝑉 ↔ (𝑋 ∈ 𝐵 ∧ ∃𝑦 ∈ 𝑃 𝑦𝐶𝑋))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 196 ∧ wa 384 = wceq 1483 ∈ wcel 1990 ∃wrex 2913 {crab 2916 class class class wbr 4653 ‘cfv 5888 Basecbs 15857 ⋖ ccvr 34549 LPlanesclpl 34778 LVolsclvol 34779 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-iota 5851 df-fun 5890 df-fv 5896 df-lvols 34786 |
This theorem is referenced by: islvol4 34860 lvoli 34861 lvolbase 34864 lvolnle3at 34868 |
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