Theorem eluzd 45837

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 12794	. . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁))
5	1, 2, 3, 4	syl3anbrc 1345	. 2 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀))
6		eluzd.1	. 2 ⊢ 𝑍 = (ℤ≥‘𝑀)
7	5, 6	eleqtrrdi 2847	1 ⊢ (𝜑 → 𝑁 ∈ 𝑍)

Syntax hints:   → wi 4   = wceq 1542   ∈ wcel 2114   class class class wbr 5085  ‘cfv 6498   ≤ cle 11180  ℤcz 12524  ℤ_≥cuz 12788

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-sep 5231  ax-nul 5241  ax-pr 5375  ax-cnex 11094  ax-resscn 11095

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-rab 3390  df-v 3431  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-br 5086  df-opab 5148  df-mpt 5167  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-fv 6506  df-ov 7370  df-neg 11380  df-z 12525  df-uz 12789

This theorem is referenced by:  uzublem  45858  uzinico  45989  uzubioo  45995  limsupubuzlem  46140  limsupequzlem  46150  limsupmnfuzlem  46154  limsupequzmptlem  46156  limsupre3uzlem  46163  supcnvlimsup  46168  limsup10exlem  46200  smflimsuplem4  47251  smfliminflem  47258