Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > coinfliplem | Structured version Visualization version GIF version |
Description: Division in the extended real numbers can be used for the coin-flip example. (Contributed by Thierry Arnoux, 15-Jan-2017.) |
Ref | Expression |
---|---|
coinflip.h | ⊢ 𝐻 ∈ V |
coinflip.t | ⊢ 𝑇 ∈ V |
coinflip.th | ⊢ 𝐻 ≠ 𝑇 |
coinflip.2 | ⊢ 𝑃 = ((♯ ↾ 𝒫 {𝐻, 𝑇}) ∘f/c / 2) |
coinflip.3 | ⊢ 𝑋 = {〈𝐻, 1〉, 〈𝑇, 0〉} |
Ref | Expression |
---|---|
coinfliplem | ⊢ 𝑃 = ((♯ ↾ 𝒫 {𝐻, 𝑇}) ∘f/c /𝑒 2) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | coinflip.2 | . 2 ⊢ 𝑃 = ((♯ ↾ 𝒫 {𝐻, 𝑇}) ∘f/c / 2) | |
2 | coinflip.h | . . 3 ⊢ 𝐻 ∈ V | |
3 | simpr 485 | . . . . . 6 ⊢ ((𝐻 ∈ V ∧ 𝑥 ∈ 𝒫 {𝐻, 𝑇}) → 𝑥 ∈ 𝒫 {𝐻, 𝑇}) | |
4 | fvres 6793 | . . . . . 6 ⊢ (𝑥 ∈ 𝒫 {𝐻, 𝑇} → ((♯ ↾ 𝒫 {𝐻, 𝑇})‘𝑥) = (♯‘𝑥)) | |
5 | 3, 4 | syl 17 | . . . . 5 ⊢ ((𝐻 ∈ V ∧ 𝑥 ∈ 𝒫 {𝐻, 𝑇}) → ((♯ ↾ 𝒫 {𝐻, 𝑇})‘𝑥) = (♯‘𝑥)) |
6 | prfi 9089 | . . . . . . . 8 ⊢ {𝐻, 𝑇} ∈ Fin | |
7 | 3 | elpwid 4544 | . . . . . . . 8 ⊢ ((𝐻 ∈ V ∧ 𝑥 ∈ 𝒫 {𝐻, 𝑇}) → 𝑥 ⊆ {𝐻, 𝑇}) |
8 | ssfi 8956 | . . . . . . . 8 ⊢ (({𝐻, 𝑇} ∈ Fin ∧ 𝑥 ⊆ {𝐻, 𝑇}) → 𝑥 ∈ Fin) | |
9 | 6, 7, 8 | sylancr 587 | . . . . . . 7 ⊢ ((𝐻 ∈ V ∧ 𝑥 ∈ 𝒫 {𝐻, 𝑇}) → 𝑥 ∈ Fin) |
10 | hashcl 14071 | . . . . . . 7 ⊢ (𝑥 ∈ Fin → (♯‘𝑥) ∈ ℕ0) | |
11 | 9, 10 | syl 17 | . . . . . 6 ⊢ ((𝐻 ∈ V ∧ 𝑥 ∈ 𝒫 {𝐻, 𝑇}) → (♯‘𝑥) ∈ ℕ0) |
12 | 11 | nn0red 12294 | . . . . 5 ⊢ ((𝐻 ∈ V ∧ 𝑥 ∈ 𝒫 {𝐻, 𝑇}) → (♯‘𝑥) ∈ ℝ) |
13 | 5, 12 | eqeltrd 2839 | . . . 4 ⊢ ((𝐻 ∈ V ∧ 𝑥 ∈ 𝒫 {𝐻, 𝑇}) → ((♯ ↾ 𝒫 {𝐻, 𝑇})‘𝑥) ∈ ℝ) |
14 | simpr 485 | . . . . 5 ⊢ ((𝐻 ∈ V ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℝ) | |
15 | 2re 12047 | . . . . . 6 ⊢ 2 ∈ ℝ | |
16 | 15 | a1i 11 | . . . . 5 ⊢ ((𝐻 ∈ V ∧ 𝑦 ∈ ℝ) → 2 ∈ ℝ) |
17 | 2ne0 12077 | . . . . . 6 ⊢ 2 ≠ 0 | |
18 | 17 | a1i 11 | . . . . 5 ⊢ ((𝐻 ∈ V ∧ 𝑦 ∈ ℝ) → 2 ≠ 0) |
19 | rexdiv 31200 | . . . . 5 ⊢ ((𝑦 ∈ ℝ ∧ 2 ∈ ℝ ∧ 2 ≠ 0) → (𝑦 /𝑒 2) = (𝑦 / 2)) | |
20 | 14, 16, 18, 19 | syl3anc 1370 | . . . 4 ⊢ ((𝐻 ∈ V ∧ 𝑦 ∈ ℝ) → (𝑦 /𝑒 2) = (𝑦 / 2)) |
21 | hashresfn 14054 | . . . . 5 ⊢ (♯ ↾ 𝒫 {𝐻, 𝑇}) Fn 𝒫 {𝐻, 𝑇} | |
22 | 21 | a1i 11 | . . . 4 ⊢ (𝐻 ∈ V → (♯ ↾ 𝒫 {𝐻, 𝑇}) Fn 𝒫 {𝐻, 𝑇}) |
23 | pwfi 8961 | . . . . . 6 ⊢ ({𝐻, 𝑇} ∈ Fin ↔ 𝒫 {𝐻, 𝑇} ∈ Fin) | |
24 | 6, 23 | mpbi 229 | . . . . 5 ⊢ 𝒫 {𝐻, 𝑇} ∈ Fin |
25 | 24 | a1i 11 | . . . 4 ⊢ (𝐻 ∈ V → 𝒫 {𝐻, 𝑇} ∈ Fin) |
26 | 15 | a1i 11 | . . . 4 ⊢ (𝐻 ∈ V → 2 ∈ ℝ) |
27 | 13, 20, 22, 25, 26 | ofcfeqd2 32069 | . . 3 ⊢ (𝐻 ∈ V → ((♯ ↾ 𝒫 {𝐻, 𝑇}) ∘f/c /𝑒 2) = ((♯ ↾ 𝒫 {𝐻, 𝑇}) ∘f/c / 2)) |
28 | 2, 27 | ax-mp 5 | . 2 ⊢ ((♯ ↾ 𝒫 {𝐻, 𝑇}) ∘f/c /𝑒 2) = ((♯ ↾ 𝒫 {𝐻, 𝑇}) ∘f/c / 2) |
29 | 1, 28 | eqtr4i 2769 | 1 ⊢ 𝑃 = ((♯ ↾ 𝒫 {𝐻, 𝑇}) ∘f/c /𝑒 2) |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 396 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 Vcvv 3432 ⊆ wss 3887 𝒫 cpw 4533 {cpr 4563 〈cop 4567 ↾ cres 5591 Fn wfn 6428 ‘cfv 6433 (class class class)co 7275 Fincfn 8733 ℝcr 10870 0cc0 10871 1c1 10872 / cdiv 11632 2c2 12028 ℕ0cn0 12233 ♯chash 14044 /𝑒 cxdiv 31191 ∘f/c cofc 32063 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-n0 12234 df-xnn0 12306 df-z 12320 df-uz 12583 df-xneg 12848 df-xmul 12850 df-hash 14045 df-xdiv 31192 df-ofc 32064 |
This theorem is referenced by: coinflipprob 32446 |
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