Theorem eluzd 45983

Description: Membership in an upper set of integers. (Contributed by Glauco Siliprandi, 23-Oct-2021.)

Hypotheses

Ref	Expression
eluzd.1	⊢ 𝑍 = (ℤ≥‘𝑀)
eluzd.2	⊢ (𝜑 → 𝑀 ∈ ℤ)
eluzd.3	⊢ (𝜑 → 𝑁 ∈ ℤ)
eluzd.4	⊢ (𝜑 → 𝑀 ≤ 𝑁)

Assertion

Ref	Expression
eluzd	⊢ (𝜑 → 𝑁 ∈ 𝑍)

Proof of Theorem eluzd

Step	Hyp	Ref	Expression
1		eluzd.2	. . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ)
2		eluzd.3	. . 3 ⊢ (𝜑 → 𝑁 ∈ ℤ)
3		eluzd.4	. . 3 ⊢ (𝜑 → 𝑀 ≤ 𝑁)
4		eluz2 12845	. . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁))
5	1, 2, 3, 4	syl3anbrc 1357	. 2 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀))
6		eluzd.1	. 2 ⊢ 𝑍 = (ℤ≥‘𝑀)
7	5, 6	eleqtrrdi 2873	1 ⊢ (𝜑 → 𝑁 ∈ 𝑍)

Syntax hints:   → wi 4   = wceq 1560   ∈ wcel 2142   class class class wbr 5100  ‘cfv 6521   ≤ cle 11217  ℤcz 12568  ℤ_≥cuz 12839

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1815  ax-4 1829  ax-5 1930  ax-6 1987  ax-7 2028  ax-8 2144  ax-9 2152  ax-10 2175  ax-11 2191  ax-12 2212  ax-ext 2734  ax-sep 5246  ax-nul 5256  ax-pr 5390  ax-cnex 11129  ax-resscn 11130

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3or 1099  df-3an 1100  df-tru 1563  df-fal 1573  df-ex 1800  df-nf 1804  df-sb 2091  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ne 2958  df-ral 3077  df-rex 3087  df-rab 3415  df-v 3456  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4481  df-pw 4557  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-mpt 5182  df-id 5542  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-iota 6477  df-fun 6523  df-fn 6524  df-f 6525  df-fv 6529  df-ov 7399  df-neg 11417  df-z 12569  df-uz 12840

This theorem is referenced by:  uzublem  46004  uzinico  46135  uzubioo  46141  limsupubuzlem  46286  limsupequzlem  46296  limsupmnfuzlem  46300  limsupequzmptlem  46302  limsupre3uzlem  46309  supcnvlimsup  46314  limsup10exlem  46346  fourierdlem48  46728  fourierdlem49  46729  smflimsuplem4  47397  smfliminflem  47404