Theorem atssbase 36428

Description: The set of atoms is a subset of the base set. (atssch 30122 analog.) (Contributed by NM, 21-Oct-2011.)

Hypotheses

Ref	Expression
atombase.b	⊢ 𝐵 = (Base‘𝐾)
atombase.a	⊢ 𝐴 = (Atoms‘𝐾)

Assertion

Ref	Expression
atssbase	⊢ 𝐴 ⊆ 𝐵

Proof of Theorem atssbase

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		atombase.b	. . 3 ⊢ 𝐵 = (Base‘𝐾)
2		atombase.a	. . 3 ⊢ 𝐴 = (Atoms‘𝐾)
3	1, 2	atbase 36427	. 2 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵)
4	3	ssriv 3973	1 ⊢ 𝐴 ⊆ 𝐵

Syntax hints:   = wceq 1537   ⊆ wss 3938  ‘cfv 6357  Basecbs 16485  Atomscatm 36401

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-sbc 3775  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-opab 5131  df-mpt 5149  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-iota 6316  df-fun 6359  df-fv 6365  df-ats 36405

This theorem is referenced by:  atlatmstc  36457  atlatle  36458  pmapssbaN  36898  pmaple  36899  polsubN  37045  2polvalN  37052  2polssN  37053  3polN  37054  2pmaplubN  37064  paddunN  37065  poldmj1N  37066  pnonsingN  37071  ispsubcl2N  37085  psubclinN  37086  paddatclN  37087  polsubclN  37090  poml4N  37091