Theorem atssbase 39660

Description: The set of atoms is a subset of the base set. (atssch 32430 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 39659	. 2 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵)
4	3	ssriv 3939	1 ⊢ 𝐴 ⊆ 𝐵

Syntax hints:   = wceq 1542   ⊆ wss 3903  ‘cfv 6500  Basecbs 17148  Atomscatm 39633

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 2709  ax-sep 5243  ax-nul 5253  ax-pr 5379

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rab 3402  df-v 3444  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-mpt 5182  df-id 5527  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-iota 6456  df-fun 6502  df-fv 6508  df-ats 39637

This theorem is referenced by:  atlatmstc  39689  atlatle  39690  pmapssbaN  40130  pmaple  40131  polsubN  40277  2polvalN  40284  2polssN  40285  3polN  40286  2pmaplubN  40296  paddunN  40297  poldmj1N  40298  pnonsingN  40303  ispsubcl2N  40317  psubclinN  40318  paddatclN  40319  polsubclN  40322  poml4N  40323