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Theorem iccpartxr 48774
Description: If there is a partition, then all intermediate points and bounds are extended real numbers. (Contributed by AV, 11-Jul-2020.)
Hypotheses
Ref Expression
iccpartgtprec.m (𝜑 → 𝑀 ∈ ℕ)
iccpartgtprec.p (𝜑 → 𝑃 ∈ (RePart‘𝑀))
iccpartxr.i (𝜑 → 𝐼 ∈ (0...𝑀))
Assertion
Ref Expression
iccpartxr (𝜑 → (𝑃‘𝐼) ∈ ℝ*)

Proof of Theorem iccpartxr
Dummy variable 𝑖 is distinct from all other variables.
StepHypRef Expression
1 iccpartgtprec.p . . . . 5 (𝜑 → 𝑃 ∈ (RePart‘𝑀))
2 iccpartgtprec.m . . . . . 6 (𝜑 → 𝑀 ∈ ℕ)
3 iccpart 48771 . . . . . 6 (𝑀 ∈ ℕ → (𝑃 ∈ (RePart‘𝑀) ↔ (𝑃 ∈ (ℝ* ↑m (0...𝑀)) ∧ ∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))))
42, 3syl 18 . . . . 5 (𝜑 → (𝑃 ∈ (RePart‘𝑀) ↔ (𝑃 ∈ (ℝ* ↑m (0...𝑀)) ∧ ∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))))
51, 4mpbid 235 . . . 4 (𝜑 → (𝑃 ∈ (ℝ* ↑m (0...𝑀)) ∧ ∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1))))
65simpld 500 . . 3 (𝜑 → 𝑃 ∈ (ℝ* ↑m (0...𝑀)))
7 elmapi 8907 . . 3 (𝑃 ∈ (ℝ* ↑m (0...𝑀)) → 𝑃:(0...𝑀)⟶ℝ*)
86, 7syl 18 . 2 (𝜑 → 𝑃:(0...𝑀)⟶ℝ*)
9 iccpartxr.i . 2 (𝜑 → 𝐼 ∈ (0...𝑀))
108, 9ffvelcdmd 7117 1 (𝜑 → (𝑃‘𝐼) ∈ ℝ*)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∈ wcel 2147  ∀wral 3080   class class class wbr 5108  ⟶wf 6562  ‘cfv 6566  (class class class)co 7451   ↑m cmap 8885  0cc0 11239  1c1 11240   + caddc 11242  ℝ*cxr 11381   < clt 11382  ℕcn 12375  ...cfz 13679  ..^cfzo 13828  RePartciccp 48768
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 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-sep 5255  ax-nul 5266  ax-pow 5334  ax-pr 5398  ax-un 7783
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 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4841  df-uni 4873  df-iun 4958  df-br 5109  df-opab 5174  df-mpt 5193  df-id 5553  df-xp 5664  df-rel 5665  df-cnv 5666  df-co 5667  df-dm 5668  df-rn 5669  df-res 5670  df-ima 5671  df-iota 6520  df-fun 6568  df-fn 6569  df-f 6570  df-fv 6574  df-ov 7454  df-oprab 7455  df-mpo 7456  df-1st 8035  df-2nd 8036  df-map 8887  df-iccp 48769
This theorem is used by:  iccpartipre  48776  iccpartiltu  48777  iccpartigtl  48778  iccpartlt  48779  iccpartleu  48783  iccpartgel  48784  iccpartrn  48785  iccelpart  48788  iccpartiun  48789  icceuelpartlem  48790  icceuelpart  48791  iccpartdisj  48792  iccpartnel  48793  bgoldbtbndlem2  49177
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