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Theorem nulsgts 27784
Description: The empty set is greater than any set of surreals. (Contributed by Scott Fenton, 8-Dec-2021.)
Assertion
Ref Expression
nulsgts (𝐴 ∈ 𝒫 No 𝐴 <<s ∅)

Proof of Theorem nulsgts
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 id 22 . 2 (𝐴 ∈ 𝒫 No 𝐴 ∈ 𝒫 No )
2 0ex 5254 . . 3 ∅ ∈ V
32a1i 11 . 2 (𝐴 ∈ 𝒫 No → ∅ ∈ V)
4 elpwi 4563 . 2 (𝐴 ∈ 𝒫 No 𝐴 No )
5 0ss 4354 . . 3 ∅ ⊆ No
65a1i 11 . 2 (𝐴 ∈ 𝒫 No → ∅ ⊆ No )
7 noel 4292 . . . 4 ¬ 𝑦 ∈ ∅
87pm2.21i 119 . . 3 (𝑦 ∈ ∅ → 𝑥 <s 𝑦)
983ad2ant3 1136 . 2 ((𝐴 ∈ 𝒫 No 𝑥𝐴𝑦 ∈ ∅) → 𝑥 <s 𝑦)
101, 3, 4, 6, 9sltsd 27776 1 (𝐴 ∈ 𝒫 No 𝐴 <<s ∅)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2114  Vcvv 3442  wss 3903  c0 4287  𝒫 cpw 4556   class class class wbr 5100   No csur 27619   <s clts 27620   <<s cslts 27765
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-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-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  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-br 5101  df-opab 5163  df-xp 5638  df-slts 27766
This theorem is referenced by:  nulsgtsd  27786  0no  27817  1no  27818  bday0  27819  0lt1s  27820  bday0b  27821  bday1  27822  cutneg  27824  rightge0  27829  lltr  27870  made0  27871  elons2  28266  oncutlt  28272  oniso  28279  bdayons  28284  onaddscl  28285  onmulscl  28286  onsbnd  28289  n0cut  28342  n0bday  28360  n0fincut  28363  bdayn0p1  28377  zcuts  28415  twocut  28431  addhalfcut  28467
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