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Theorem iccpartxr 48640
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 48637 . . . . . 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 8880 . . 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 7093 1 (𝜑 → (𝑃‘𝐼) ∈ ℝ*)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∈ wcel 2146  ∀wral 3079   class class class wbr 5105  ⟶wf 6542  ‘cfv 6546  (class class class)co 7427   ↑m cmap 8858  0cc0 11210  1c1 11211   + caddc 11213  ℝ*cxr 11352   < clt 11353  ℕcn 12345  ...cfz 13649  ..^cfzo 13798  RePartciccp 48634
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1944  ax-6 2001  ax-7 2042  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2196  ax-12 2215  ax-ext 2735  ax-sep 5251  ax-nul 5262  ax-pow 5330  ax-pr 5394  ax-un 7758
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2101  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-rab 3416  df-v 3455  df-sbc 3742  df-csb 3851  df-ss 3900  df-dif 4049  df-in 4093  df-un 4153  df-nul 4281  df-if 4485  df-pw 4561  df-sn 4588  df-pr 4590  df-op 4838  df-uni 4870  df-iun 4955  df-br 5106  df-opab 5170  df-mpt 5189  df-id 5549  df-xp 5660  df-rel 5661  df-cnv 5662  df-co 5663  df-dm 5664  df-rn 5665  df-res 5666  df-ima 5667  df-iota 6500  df-fun 6548  df-fn 6549  df-f 6550  df-fv 6554  df-ov 7430  df-oprab 7431  df-mpo 7432  df-1st 8008  df-2nd 8009  df-map 8860  df-iccp 48635
This theorem is used by:  iccpartipre  48642  iccpartiltu  48643  iccpartigtl  48644  iccpartlt  48645  iccpartleu  48649  iccpartgel  48650  iccpartrn  48651  iccelpart  48654  iccpartiun  48655  icceuelpartlem  48656  icceuelpart  48657  iccpartdisj  48658  iccpartnel  48659  bgoldbtbndlem2  49043
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