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Mirrors > Home > MPE Home > Th. List > cntrval | Structured version Visualization version GIF version |
Description: Substitute definition of the center. (Contributed by Stefan O'Rear, 5-Sep-2015.) |
Ref | Expression |
---|---|
cntrval.b | ⊢ 𝐵 = (Base‘𝑀) |
cntrval.z | ⊢ 𝑍 = (Cntz‘𝑀) |
Ref | Expression |
---|---|
cntrval | ⊢ (𝑍‘𝐵) = (Cntr‘𝑀) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fveq2 6670 | . . . . . 6 ⊢ (𝑚 = 𝑀 → (Cntz‘𝑚) = (Cntz‘𝑀)) | |
2 | cntrval.z | . . . . . 6 ⊢ 𝑍 = (Cntz‘𝑀) | |
3 | 1, 2 | syl6eqr 2874 | . . . . 5 ⊢ (𝑚 = 𝑀 → (Cntz‘𝑚) = 𝑍) |
4 | fveq2 6670 | . . . . . 6 ⊢ (𝑚 = 𝑀 → (Base‘𝑚) = (Base‘𝑀)) | |
5 | cntrval.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝑀) | |
6 | 4, 5 | syl6eqr 2874 | . . . . 5 ⊢ (𝑚 = 𝑀 → (Base‘𝑚) = 𝐵) |
7 | 3, 6 | fveq12d 6677 | . . . 4 ⊢ (𝑚 = 𝑀 → ((Cntz‘𝑚)‘(Base‘𝑚)) = (𝑍‘𝐵)) |
8 | df-cntr 18448 | . . . 4 ⊢ Cntr = (𝑚 ∈ V ↦ ((Cntz‘𝑚)‘(Base‘𝑚))) | |
9 | fvex 6683 | . . . 4 ⊢ (𝑍‘𝐵) ∈ V | |
10 | 7, 8, 9 | fvmpt 6768 | . . 3 ⊢ (𝑀 ∈ V → (Cntr‘𝑀) = (𝑍‘𝐵)) |
11 | 10 | eqcomd 2827 | . 2 ⊢ (𝑀 ∈ V → (𝑍‘𝐵) = (Cntr‘𝑀)) |
12 | 0fv 6709 | . . 3 ⊢ (∅‘𝐵) = ∅ | |
13 | fvprc 6663 | . . . . 5 ⊢ (¬ 𝑀 ∈ V → (Cntz‘𝑀) = ∅) | |
14 | 2, 13 | syl5eq 2868 | . . . 4 ⊢ (¬ 𝑀 ∈ V → 𝑍 = ∅) |
15 | 14 | fveq1d 6672 | . . 3 ⊢ (¬ 𝑀 ∈ V → (𝑍‘𝐵) = (∅‘𝐵)) |
16 | fvprc 6663 | . . 3 ⊢ (¬ 𝑀 ∈ V → (Cntr‘𝑀) = ∅) | |
17 | 12, 15, 16 | 3eqtr4a 2882 | . 2 ⊢ (¬ 𝑀 ∈ V → (𝑍‘𝐵) = (Cntr‘𝑀)) |
18 | 11, 17 | pm2.61i 184 | 1 ⊢ (𝑍‘𝐵) = (Cntr‘𝑀) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 = wceq 1537 ∈ wcel 2114 Vcvv 3494 ∅c0 4291 ‘cfv 6355 Basecbs 16483 Cntzccntz 18445 Cntrccntr 18446 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-iota 6314 df-fun 6357 df-fv 6363 df-cntr 18448 |
This theorem is referenced by: cntrss 18460 cntri 18461 cntrsubgnsg 18471 cntrnsg 18472 oppgcntr 18493 cntrcmnd 18962 cntrabl 18963 primefld 19584 cntrcrng 30697 |
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