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Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > ballotlemfval0 | Structured version Visualization version GIF version |
Description: (𝐹‘𝐶) always starts counting at 0 . (Contributed by Thierry Arnoux, 25-Nov-2016.) |
Ref | Expression |
---|---|
ballotth.m | ⊢ 𝑀 ∈ ℕ |
ballotth.n | ⊢ 𝑁 ∈ ℕ |
ballotth.o | ⊢ 𝑂 = {𝑐 ∈ 𝒫 (1...(𝑀 + 𝑁)) ∣ (♯‘𝑐) = 𝑀} |
ballotth.p | ⊢ 𝑃 = (𝑥 ∈ 𝒫 𝑂 ↦ ((♯‘𝑥) / (♯‘𝑂))) |
ballotth.f | ⊢ 𝐹 = (𝑐 ∈ 𝑂 ↦ (𝑖 ∈ ℤ ↦ ((♯‘((1...𝑖) ∩ 𝑐)) − (♯‘((1...𝑖) ∖ 𝑐))))) |
Ref | Expression |
---|---|
ballotlemfval0 | ⊢ (𝐶 ∈ 𝑂 → ((𝐹‘𝐶)‘0) = 0) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ballotth.m | . . 3 ⊢ 𝑀 ∈ ℕ | |
2 | ballotth.n | . . 3 ⊢ 𝑁 ∈ ℕ | |
3 | ballotth.o | . . 3 ⊢ 𝑂 = {𝑐 ∈ 𝒫 (1...(𝑀 + 𝑁)) ∣ (♯‘𝑐) = 𝑀} | |
4 | ballotth.p | . . 3 ⊢ 𝑃 = (𝑥 ∈ 𝒫 𝑂 ↦ ((♯‘𝑥) / (♯‘𝑂))) | |
5 | ballotth.f | . . 3 ⊢ 𝐹 = (𝑐 ∈ 𝑂 ↦ (𝑖 ∈ ℤ ↦ ((♯‘((1...𝑖) ∩ 𝑐)) − (♯‘((1...𝑖) ∖ 𝑐))))) | |
6 | id 22 | . . 3 ⊢ (𝐶 ∈ 𝑂 → 𝐶 ∈ 𝑂) | |
7 | 0zd 11981 | . . 3 ⊢ (𝐶 ∈ 𝑂 → 0 ∈ ℤ) | |
8 | 1, 2, 3, 4, 5, 6, 7 | ballotlemfval 31857 | . 2 ⊢ (𝐶 ∈ 𝑂 → ((𝐹‘𝐶)‘0) = ((♯‘((1...0) ∩ 𝐶)) − (♯‘((1...0) ∖ 𝐶)))) |
9 | fz10 12923 | . . . . . . . 8 ⊢ (1...0) = ∅ | |
10 | 9 | ineq1i 4135 | . . . . . . 7 ⊢ ((1...0) ∩ 𝐶) = (∅ ∩ 𝐶) |
11 | incom 4128 | . . . . . . 7 ⊢ (𝐶 ∩ ∅) = (∅ ∩ 𝐶) | |
12 | in0 4299 | . . . . . . 7 ⊢ (𝐶 ∩ ∅) = ∅ | |
13 | 10, 11, 12 | 3eqtr2i 2827 | . . . . . 6 ⊢ ((1...0) ∩ 𝐶) = ∅ |
14 | 13 | fveq2i 6648 | . . . . 5 ⊢ (♯‘((1...0) ∩ 𝐶)) = (♯‘∅) |
15 | hash0 13724 | . . . . 5 ⊢ (♯‘∅) = 0 | |
16 | 14, 15 | eqtri 2821 | . . . 4 ⊢ (♯‘((1...0) ∩ 𝐶)) = 0 |
17 | 9 | difeq1i 4046 | . . . . . . 7 ⊢ ((1...0) ∖ 𝐶) = (∅ ∖ 𝐶) |
18 | 0dif 4309 | . . . . . . 7 ⊢ (∅ ∖ 𝐶) = ∅ | |
19 | 17, 18 | eqtri 2821 | . . . . . 6 ⊢ ((1...0) ∖ 𝐶) = ∅ |
20 | 19 | fveq2i 6648 | . . . . 5 ⊢ (♯‘((1...0) ∖ 𝐶)) = (♯‘∅) |
21 | 20, 15 | eqtri 2821 | . . . 4 ⊢ (♯‘((1...0) ∖ 𝐶)) = 0 |
22 | 16, 21 | oveq12i 7147 | . . 3 ⊢ ((♯‘((1...0) ∩ 𝐶)) − (♯‘((1...0) ∖ 𝐶))) = (0 − 0) |
23 | 0m0e0 11745 | . . 3 ⊢ (0 − 0) = 0 | |
24 | 22, 23 | eqtri 2821 | . 2 ⊢ ((♯‘((1...0) ∩ 𝐶)) − (♯‘((1...0) ∖ 𝐶))) = 0 |
25 | 8, 24 | eqtrdi 2849 | 1 ⊢ (𝐶 ∈ 𝑂 → ((𝐹‘𝐶)‘0) = 0) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1538 ∈ wcel 2111 {crab 3110 ∖ cdif 3878 ∩ cin 3880 ∅c0 4243 𝒫 cpw 4497 ↦ cmpt 5110 ‘cfv 6324 (class class class)co 7135 0cc0 10526 1c1 10527 + caddc 10529 − cmin 10859 / cdiv 11286 ℕcn 11625 ℤcz 11969 ...cfz 12885 ♯chash 13686 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-int 4839 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-1o 8085 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-fin 8496 df-card 9352 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-n0 11886 df-z 11970 df-uz 12232 df-fz 12886 df-hash 13687 |
This theorem is referenced by: ballotlem4 31866 ballotlemi1 31870 ballotlemii 31871 ballotlemic 31874 ballotlem1c 31875 |
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