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Theorem zssxr 46170
Description: The integers are a subset of the extended reals. (Contributed by Glauco Siliprandi, 23-Oct-2021.)
Assertion
Ref Expression
zssxr ℤ ⊆ ℝ*

Proof of Theorem zssxr
StepHypRef Expression
1 zssre 12613 . 2 ℤ ⊆ ℝ
2 ressxr 11268 . 2 ℝ ⊆ ℝ*
31, 2sstri 3947 1 ℤ ⊆ ℝ*
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wss 3906  cr 11114  *cxr 11257  cz 12606
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 2148  ax-9 2156  ax-ext 2737
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2744  df-cleq 2757  df-clel 2840  df-rab 3419  df-v 3459  df-dif 3909  df-un 3911  df-ss 3923  df-nul 4287  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4875  df-br 5112  df-iota 6496  df-fv 6548  df-ov 7422  df-xr 11262  df-neg 11459  df-z 12607
This theorem is used by:  limsupequzlem  46494
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