| Step | Hyp | Ref
| Expression |
| 1 | | mapdord.h |
. . . 4
⊢ 𝐻 = (LHyp‘𝐾) |
| 2 | | mapdord.u |
. . . 4
⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) |
| 3 | | mapdord.s |
. . . 4
⊢ 𝑆 = (LSubSp‘𝑈) |
| 4 | | mapdord.f |
. . . 4
⊢ 𝐹 = (LFnl‘𝑈) |
| 5 | | mapdord.l |
. . . 4
⊢ 𝐿 = (LKer‘𝑈) |
| 6 | | mapdord.o |
. . . 4
⊢ 𝑂 = ((ocH‘𝐾)‘𝑊) |
| 7 | | mapdord.m |
. . . 4
⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) |
| 8 | | mapdord.k |
. . . 4
⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) |
| 9 | | mapdord.x |
. . . 4
⊢ (𝜑 → 𝑋 ∈ 𝑆) |
| 10 | | mapdord.q |
. . . 4
⊢ 𝐶 = {𝑔 ∈ 𝐹 ∣ (𝑂‘(𝑂‘(𝐿‘𝑔))) = (𝐿‘𝑔)} |
| 11 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | mapdvalc 41828 |
. . 3
⊢ (𝜑 → (𝑀‘𝑋) = {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋}) |
| 12 | | mapdord.y |
. . . 4
⊢ (𝜑 → 𝑌 ∈ 𝑆) |
| 13 | 1, 2, 3, 4, 5, 6, 7, 8, 12, 10 | mapdvalc 41828 |
. . 3
⊢ (𝜑 → (𝑀‘𝑌) = {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌}) |
| 14 | 11, 13 | sseq12d 3965 |
. 2
⊢ (𝜑 → ((𝑀‘𝑋) ⊆ (𝑀‘𝑌) ↔ {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋} ⊆ {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌})) |
| 15 | | ss2rab 4019 |
. . . . 5
⊢ ({𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋} ⊆ {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌} ↔ ∀𝑓 ∈ 𝐶 ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)) |
| 16 | | eqid 2734 |
. . . . . . . . 9
⊢
(Base‘𝑈) =
(Base‘𝑈) |
| 17 | | mapdord.c |
. . . . . . . . 9
⊢ 𝐽 = (LSHyp‘𝑈) |
| 18 | | mapdord.t |
. . . . . . . . 9
⊢ 𝑇 = {𝑔 ∈ 𝐹 ∣ (𝑂‘(𝑂‘(𝐿‘𝑔))) ∈ 𝐽} |
| 19 | 1, 6, 2, 16, 17, 4, 5, 18, 10, 8 | mapdordlem1a 41833 |
. . . . . . . 8
⊢ (𝜑 → (𝑓 ∈ 𝑇 ↔ (𝑓 ∈ 𝐶 ∧ (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽))) |
| 20 | | simprl 770 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ (𝑓 ∈ 𝐶 ∧ (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽)) → 𝑓 ∈ 𝐶) |
| 21 | | idd 24 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ (𝑓 ∈ 𝐶 ∧ (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽)) → (((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌) → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌))) |
| 22 | 20, 21 | embantd 59 |
. . . . . . . . 9
⊢ ((𝜑 ∧ (𝑓 ∈ 𝐶 ∧ (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽)) → ((𝑓 ∈ 𝐶 → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)) → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌))) |
| 23 | 22 | ex 412 |
. . . . . . . 8
⊢ (𝜑 → ((𝑓 ∈ 𝐶 ∧ (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽) → ((𝑓 ∈ 𝐶 → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)) → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)))) |
| 24 | 19, 23 | sylbid 240 |
. . . . . . 7
⊢ (𝜑 → (𝑓 ∈ 𝑇 → ((𝑓 ∈ 𝐶 → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)) → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)))) |
| 25 | 24 | com23 86 |
. . . . . 6
⊢ (𝜑 → ((𝑓 ∈ 𝐶 → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)) → (𝑓 ∈ 𝑇 → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)))) |
| 26 | 25 | ralimdv2 3143 |
. . . . 5
⊢ (𝜑 → (∀𝑓 ∈ 𝐶 ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌) → ∀𝑓 ∈ 𝑇 ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌))) |
| 27 | 15, 26 | biimtrid 242 |
. . . 4
⊢ (𝜑 → ({𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋} ⊆ {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌} → ∀𝑓 ∈ 𝑇 ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌))) |
| 28 | | mapdord.a |
. . . . . 6
⊢ 𝐴 = (LSAtoms‘𝑈) |
| 29 | 1, 2, 8 | dvhlmod 41309 |
. . . . . 6
⊢ (𝜑 → 𝑈 ∈ LMod) |
| 30 | 3, 28, 29, 9, 12 | lssatle 39214 |
. . . . 5
⊢ (𝜑 → (𝑋 ⊆ 𝑌 ↔ ∀𝑝 ∈ 𝐴 (𝑝 ⊆ 𝑋 → 𝑝 ⊆ 𝑌))) |
| 31 | 18 | mapdordlem1 41835 |
. . . . . . . . . . 11
⊢ (𝑓 ∈ 𝑇 ↔ (𝑓 ∈ 𝐹 ∧ (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽)) |
| 32 | 31 | simprbi 496 |
. . . . . . . . . 10
⊢ (𝑓 ∈ 𝑇 → (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽) |
| 33 | 32 | adantl 481 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽) |
| 34 | 8 | adantr 480 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) |
| 35 | 31 | simplbi 497 |
. . . . . . . . . . 11
⊢ (𝑓 ∈ 𝑇 → 𝑓 ∈ 𝐹) |
| 36 | 35 | adantl 481 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → 𝑓 ∈ 𝐹) |
| 37 | 1, 6, 2, 4, 17, 5,
34, 36 | dochlkr 41584 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → ((𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽 ↔ ((𝑂‘(𝑂‘(𝐿‘𝑓))) = (𝐿‘𝑓) ∧ (𝐿‘𝑓) ∈ 𝐽))) |
| 38 | 33, 37 | mpbid 232 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → ((𝑂‘(𝑂‘(𝐿‘𝑓))) = (𝐿‘𝑓) ∧ (𝐿‘𝑓) ∈ 𝐽)) |
| 39 | 38 | simpld 494 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → (𝑂‘(𝑂‘(𝐿‘𝑓))) = (𝐿‘𝑓)) |
| 40 | 38 | simprd 495 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → (𝐿‘𝑓) ∈ 𝐽) |
| 41 | 1, 6, 2, 28, 17, 34, 40 | dochshpsat 41653 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → ((𝑂‘(𝑂‘(𝐿‘𝑓))) = (𝐿‘𝑓) ↔ (𝑂‘(𝐿‘𝑓)) ∈ 𝐴)) |
| 42 | 39, 41 | mpbid 232 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑇) → (𝑂‘(𝐿‘𝑓)) ∈ 𝐴) |
| 43 | 1, 2, 8 | dvhlvec 41308 |
. . . . . . . 8
⊢ (𝜑 → 𝑈 ∈ LVec) |
| 44 | 8 | adantr 480 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) |
| 45 | | simpr 484 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → 𝑝 ∈ 𝐴) |
| 46 | 1, 2, 6, 28, 17, 44, 45 | dochsatshp 41650 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → (𝑂‘𝑝) ∈ 𝐽) |
| 47 | 17, 4, 5 | lshpkrex 39317 |
. . . . . . . 8
⊢ ((𝑈 ∈ LVec ∧ (𝑂‘𝑝) ∈ 𝐽) → ∃𝑓 ∈ 𝐹 (𝐿‘𝑓) = (𝑂‘𝑝)) |
| 48 | 43, 46, 47 | syl2an2r 685 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → ∃𝑓 ∈ 𝐹 (𝐿‘𝑓) = (𝑂‘𝑝)) |
| 49 | | simprl 770 |
. . . . . . . 8
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → 𝑓 ∈ 𝐹) |
| 50 | | simprr 772 |
. . . . . . . . . . . 12
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → (𝐿‘𝑓) = (𝑂‘𝑝)) |
| 51 | 50 | fveq2d 6836 |
. . . . . . . . . . 11
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → (𝑂‘(𝐿‘𝑓)) = (𝑂‘(𝑂‘𝑝))) |
| 52 | 51 | fveq2d 6836 |
. . . . . . . . . 10
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → (𝑂‘(𝑂‘(𝐿‘𝑓))) = (𝑂‘(𝑂‘(𝑂‘𝑝)))) |
| 53 | 29 | adantr 480 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → 𝑈 ∈ LMod) |
| 54 | 16, 28, 53, 45 | lsatssv 39197 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → 𝑝 ⊆ (Base‘𝑈)) |
| 55 | | eqid 2734 |
. . . . . . . . . . . . . 14
⊢
((DIsoH‘𝐾)‘𝑊) = ((DIsoH‘𝐾)‘𝑊) |
| 56 | 1, 55, 2, 16, 6 | dochcl 41552 |
. . . . . . . . . . . . 13
⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝑝 ⊆ (Base‘𝑈)) → (𝑂‘𝑝) ∈ ran ((DIsoH‘𝐾)‘𝑊)) |
| 57 | 8, 54, 56 | syl2an2r 685 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → (𝑂‘𝑝) ∈ ran ((DIsoH‘𝐾)‘𝑊)) |
| 58 | 1, 55, 6 | dochoc 41566 |
. . . . . . . . . . . 12
⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑂‘𝑝) ∈ ran ((DIsoH‘𝐾)‘𝑊)) → (𝑂‘(𝑂‘(𝑂‘𝑝))) = (𝑂‘𝑝)) |
| 59 | 8, 57, 58 | syl2an2r 685 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → (𝑂‘(𝑂‘(𝑂‘𝑝))) = (𝑂‘𝑝)) |
| 60 | 59 | adantr 480 |
. . . . . . . . . 10
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → (𝑂‘(𝑂‘(𝑂‘𝑝))) = (𝑂‘𝑝)) |
| 61 | 52, 60 | eqtrd 2769 |
. . . . . . . . 9
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → (𝑂‘(𝑂‘(𝐿‘𝑓))) = (𝑂‘𝑝)) |
| 62 | 46 | adantr 480 |
. . . . . . . . 9
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → (𝑂‘𝑝) ∈ 𝐽) |
| 63 | 61, 62 | eqeltrd 2834 |
. . . . . . . 8
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → (𝑂‘(𝑂‘(𝐿‘𝑓))) ∈ 𝐽) |
| 64 | 49, 63, 31 | sylanbrc 583 |
. . . . . . 7
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → 𝑓 ∈ 𝑇) |
| 65 | 1, 2, 55, 28 | dih1dimat 41529 |
. . . . . . . . . . 11
⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝑝 ∈ 𝐴) → 𝑝 ∈ ran ((DIsoH‘𝐾)‘𝑊)) |
| 66 | 8, 45, 65 | syl2an2r 685 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → 𝑝 ∈ ran ((DIsoH‘𝐾)‘𝑊)) |
| 67 | 1, 55, 6 | dochoc 41566 |
. . . . . . . . . 10
⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝑝 ∈ ran ((DIsoH‘𝐾)‘𝑊)) → (𝑂‘(𝑂‘𝑝)) = 𝑝) |
| 68 | 8, 66, 67 | syl2an2r 685 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → (𝑂‘(𝑂‘𝑝)) = 𝑝) |
| 69 | 68 | adantr 480 |
. . . . . . . 8
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → (𝑂‘(𝑂‘𝑝)) = 𝑝) |
| 70 | 51, 69 | eqtr2d 2770 |
. . . . . . 7
⊢ (((𝜑 ∧ 𝑝 ∈ 𝐴) ∧ (𝑓 ∈ 𝐹 ∧ (𝐿‘𝑓) = (𝑂‘𝑝))) → 𝑝 = (𝑂‘(𝐿‘𝑓))) |
| 71 | 48, 64, 70 | reximssdv 3152 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑝 ∈ 𝐴) → ∃𝑓 ∈ 𝑇 𝑝 = (𝑂‘(𝐿‘𝑓))) |
| 72 | | sseq1 3957 |
. . . . . . . 8
⊢ (𝑝 = (𝑂‘(𝐿‘𝑓)) → (𝑝 ⊆ 𝑋 ↔ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋)) |
| 73 | | sseq1 3957 |
. . . . . . . 8
⊢ (𝑝 = (𝑂‘(𝐿‘𝑓)) → (𝑝 ⊆ 𝑌 ↔ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)) |
| 74 | 72, 73 | imbi12d 344 |
. . . . . . 7
⊢ (𝑝 = (𝑂‘(𝐿‘𝑓)) → ((𝑝 ⊆ 𝑋 → 𝑝 ⊆ 𝑌) ↔ ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌))) |
| 75 | 74 | adantl 481 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑝 = (𝑂‘(𝐿‘𝑓))) → ((𝑝 ⊆ 𝑋 → 𝑝 ⊆ 𝑌) ↔ ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌))) |
| 76 | 42, 71, 75 | ralxfrd 5351 |
. . . . 5
⊢ (𝜑 → (∀𝑝 ∈ 𝐴 (𝑝 ⊆ 𝑋 → 𝑝 ⊆ 𝑌) ↔ ∀𝑓 ∈ 𝑇 ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌))) |
| 77 | 30, 76 | bitr2d 280 |
. . . 4
⊢ (𝜑 → (∀𝑓 ∈ 𝑇 ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌) ↔ 𝑋 ⊆ 𝑌)) |
| 78 | 27, 77 | sylibd 239 |
. . 3
⊢ (𝜑 → ({𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋} ⊆ {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌} → 𝑋 ⊆ 𝑌)) |
| 79 | | simplr 768 |
. . . . . 6
⊢ (((𝜑 ∧ 𝑋 ⊆ 𝑌) ∧ 𝑓 ∈ 𝐶) → 𝑋 ⊆ 𝑌) |
| 80 | | sstr 3940 |
. . . . . . . 8
⊢ (((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 ∧ 𝑋 ⊆ 𝑌) → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌) |
| 81 | 80 | ancoms 458 |
. . . . . . 7
⊢ ((𝑋 ⊆ 𝑌 ∧ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋) → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌) |
| 82 | 81 | a1i 11 |
. . . . . 6
⊢ (((𝜑 ∧ 𝑋 ⊆ 𝑌) ∧ 𝑓 ∈ 𝐶) → ((𝑋 ⊆ 𝑌 ∧ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋) → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)) |
| 83 | 79, 82 | mpand 695 |
. . . . 5
⊢ (((𝜑 ∧ 𝑋 ⊆ 𝑌) ∧ 𝑓 ∈ 𝐶) → ((𝑂‘(𝐿‘𝑓)) ⊆ 𝑋 → (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌)) |
| 84 | 83 | ss2rabdv 4025 |
. . . 4
⊢ ((𝜑 ∧ 𝑋 ⊆ 𝑌) → {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋} ⊆ {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌}) |
| 85 | 84 | ex 412 |
. . 3
⊢ (𝜑 → (𝑋 ⊆ 𝑌 → {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋} ⊆ {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌})) |
| 86 | 78, 85 | impbid 212 |
. 2
⊢ (𝜑 → ({𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑋} ⊆ {𝑓 ∈ 𝐶 ∣ (𝑂‘(𝐿‘𝑓)) ⊆ 𝑌} ↔ 𝑋 ⊆ 𝑌)) |
| 87 | 14, 86 | bitrd 279 |
1
⊢ (𝜑 → ((𝑀‘𝑋) ⊆ (𝑀‘𝑌) ↔ 𝑋 ⊆ 𝑌)) |