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Mirrors > Home > MPE Home > Th. List > cntri | Structured version Visualization version GIF version |
Description: Defining property of the center of a group. (Contributed by Mario Carneiro, 22-Sep-2015.) |
Ref | Expression |
---|---|
cntri.b | ⊢ 𝐵 = (Base‘𝑀) |
cntri.p | ⊢ + = (+g‘𝑀) |
cntri.z | ⊢ 𝑍 = (Cntr‘𝑀) |
Ref | Expression |
---|---|
cntri | ⊢ ((𝑋 ∈ 𝑍 ∧ 𝑌 ∈ 𝐵) → (𝑋 + 𝑌) = (𝑌 + 𝑋)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cntri.z | . . . 4 ⊢ 𝑍 = (Cntr‘𝑀) | |
2 | cntri.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑀) | |
3 | eqid 2738 | . . . . 5 ⊢ (Cntz‘𝑀) = (Cntz‘𝑀) | |
4 | 2, 3 | cntrval 18840 | . . . 4 ⊢ ((Cntz‘𝑀)‘𝐵) = (Cntr‘𝑀) |
5 | 1, 4 | eqtr4i 2769 | . . 3 ⊢ 𝑍 = ((Cntz‘𝑀)‘𝐵) |
6 | 5 | eleq2i 2830 | . 2 ⊢ (𝑋 ∈ 𝑍 ↔ 𝑋 ∈ ((Cntz‘𝑀)‘𝐵)) |
7 | cntri.p | . . 3 ⊢ + = (+g‘𝑀) | |
8 | 7, 3 | cntzi 18850 | . 2 ⊢ ((𝑋 ∈ ((Cntz‘𝑀)‘𝐵) ∧ 𝑌 ∈ 𝐵) → (𝑋 + 𝑌) = (𝑌 + 𝑋)) |
9 | 6, 8 | sylanb 580 | 1 ⊢ ((𝑋 ∈ 𝑍 ∧ 𝑌 ∈ 𝐵) → (𝑋 + 𝑌) = (𝑌 + 𝑋)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ‘cfv 6418 (class class class)co 7255 Basecbs 16840 +gcplusg 16888 Cntzccntz 18836 Cntrccntr 18837 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-ov 7258 df-cntz 18838 df-cntr 18839 |
This theorem is referenced by: cntrcmnd 19358 primefld 19988 |
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