Theorem atssbase 40042

Description: The set of atoms is a subset of the base set. (atssch 32673 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 40041	. 2 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵)
4	3	ssriv 3942	1 ⊢ 𝐴 ⊆ 𝐵

Syntax hints:   = wceq 1570   ⊆ wss 3906  ‘cfv 6538  Basecbs 17270  Atomscatm 40015

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-sep 5258  ax-nul 5270  ax-pr 5406

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-rab 3417  df-v 3457  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4288  df-if 4489  df-pw 4565  df-sn 4591  df-pr 4593  df-op 4597  df-uni 4874  df-br 5111  df-opab 5175  df-mpt 5194  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-iota 6494  df-fun 6540  df-fv 6546  df-ats 40019

This theorem is referenced by:  atlatmstc  40071  atlatle  40072  pmapssbaN  40512  pmaple  40513  polsubN  40659  2polvalN  40666  2polssN  40667  3polN  40668  2pmaplubN  40678  paddunN  40679  poldmj1N  40680  pnonsingN  40685  ispsubcl2N  40699  psubclinN  40700  paddatclN  40701  polsubclN  40704  poml4N  40705