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Theorem probnul 34933
Description: The probability of the empty event set is 0. (Contributed by Thierry Arnoux, 25-Dec-2016.)
Assertion
Ref Expression
probnul (𝑃 ∈ Prob → (𝑃‘∅) = 0)

Proof of Theorem probnul
StepHypRef Expression
1 domprobmeas 34929 . 2 (𝑃 ∈ Prob → 𝑃 ∈ (measures‘dom 𝑃))
2 measvnul 34725 . 2 (𝑃 ∈ (measures‘dom 𝑃) → (𝑃‘∅) = 0)
31, 2syl 18 1 (𝑃 ∈ Prob → (𝑃‘∅) = 0)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4   = wceq 1570  wcel 2145  c0 4282  dom cdm 5659  cfv 6537  0cc0 11128  measurescmeas 34714  Probcprb 34926
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2734  ax-sep 5255  ax-nul 5267  ax-pow 5334  ax-pr 5402  ax-un 7740
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ne 2958  df-ral 3079  df-rex 3089  df-rab 3415  df-v 3455  df-sbc 3743  df-csb 3851  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4283  df-if 4486  df-pw 4562  df-sn 4588  df-pr 4590  df-op 4594  df-uni 4871  df-br 5108  df-opab 5172  df-mpt 5191  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-ima 5672  df-iota 6493  df-fun 6539  df-fn 6540  df-f 6541  df-fv 6545  df-ov 7420  df-esum 34546  df-meas 34715  df-prob 34927
This theorem is used by:  probun  34938  cndprobnul  34956  dstrvprob  34991
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