Theorem tospos 18490

Description: A Toset is a Poset. (Contributed by Thierry Arnoux, 20-Jan-2018.)

Assertion

Ref	Expression
tospos	⊢ (𝐹 ∈ Toset → 𝐹 ∈ Poset)

Proof of Theorem tospos

Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2740	. . 3 ⊢ (Base‘𝐹) = (Base‘𝐹)
2		eqid 2740	. . 3 ⊢ (le‘𝐹) = (le‘𝐹)
3	1, 2	istos 18488	. 2 ⊢ (𝐹 ∈ Toset ↔ (𝐹 ∈ Poset ∧ ∀𝑥 ∈ (Base‘𝐹)∀𝑦 ∈ (Base‘𝐹)(𝑥(le‘𝐹)𝑦 ∨ 𝑦(le‘𝐹)𝑥)))
4	3	simplbi 497	1 ⊢ (𝐹 ∈ Toset → 𝐹 ∈ Poset)

Syntax hints:   → wi 4   ∨ wo 846   ∈ wcel 2108  ∀wral 3067   class class class wbr 5166  ‘cfv 6573  Basecbs 17258  lecple 17318  Posetcpo 18377  Tosetctos 18486

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-ext 2711  ax-nul 5324

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 847  df-3an 1089  df-tru 1540  df-fal 1550  df-ex 1778  df-sb 2065  df-clab 2718  df-cleq 2732  df-clel 2819  df-ne 2947  df-ral 3068  df-rex 3077  df-rab 3444  df-v 3490  df-sbc 3805  df-dif 3979  df-un 3981  df-ss 3993  df-nul 4353  df-if 4549  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-br 5167  df-iota 6525  df-fv 6581  df-toset 18487

This theorem is referenced by:  tltnle  18492  resstos  32940  odutos  32941  tlt3  32943  xrsclat  32994  omndadd2d  33058  omndadd2rd  33059  omndmul2  33062  omndmul  33064  gsumle  33074  isarchi3  33167  archirngz  33169  archiabllem1a  33171  archiabllem2c  33175  orngsqr  33299  ofldchr  33309  ordtrest2NEWlem  33868  ordtrest2NEW  33869  ordtconnlem1  33870  toslat  48654