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Theorem iccpartxr 48500
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 48497 . . . . . 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 8869 . . 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 7085 1 (𝜑 → (𝑃‘𝐼) ∈ ℝ*)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∈ wcel 2145  ∀wral 3077   class class class wbr 5103  ⟶wf 6534  ‘cfv 6538  (class class class)co 7420   ↑m cmap 8847  0cc0 11200  1c1 11201   + caddc 11203  ℝ*cxr 11342   < clt 11343  ℕcn 12335  ...cfz 13639  ..^cfzo 13788  RePartciccp 48494
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 2213  ax-ext 2733  ax-sep 5249  ax-nul 5260  ax-pow 5327  ax-pr 5391  ax-un 7751
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 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-iun 4953  df-br 5104  df-opab 5168  df-mpt 5187  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-fv 6546  df-ov 7423  df-oprab 7424  df-mpo 7425  df-1st 8001  df-2nd 8002  df-map 8849  df-iccp 48495
This theorem is used by:  iccpartipre  48502  iccpartiltu  48503  iccpartigtl  48504  iccpartlt  48505  iccpartleu  48509  iccpartgel  48510  iccpartrn  48511  iccelpart  48514  iccpartiun  48515  icceuelpartlem  48516  icceuelpart  48517  iccpartdisj  48518  iccpartnel  48519  bgoldbtbndlem2  48903
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