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Theorem nulsgts 27768
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 5242 . . 3 ∅ ∈ V
32a1i 11 . 2 (𝐴 ∈ 𝒫 No → ∅ ∈ V)
4 elpwi 4548 . 2 (𝐴 ∈ 𝒫 No 𝐴 No )
5 0ss 4340 . . 3 ∅ ⊆ No
65a1i 11 . 2 (𝐴 ∈ 𝒫 No → ∅ ⊆ No )
7 noel 4278 . . . 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 27760 1 (𝐴 ∈ 𝒫 No 𝐴 <<s ∅)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2114  Vcvv 3429  wss 3889  c0 4273  𝒫 cpw 4541   class class class wbr 5085   No csur 27603   <s clts 27604   <<s cslts 27749
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 2708  ax-sep 5231  ax-nul 5241  ax-pr 5375
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 2715  df-cleq 2728  df-clel 2811  df-ral 3052  df-rex 3062  df-rab 3390  df-v 3431  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-br 5086  df-opab 5148  df-xp 5637  df-slts 27750
This theorem is referenced by:  nulsgtsd  27770  0no  27801  1no  27802  bday0  27803  0lt1s  27804  bday0b  27805  bday1  27806  cutneg  27808  rightge0  27813  lltr  27854  made0  27855  elons2  28250  oncutlt  28256  oniso  28263  bdayons  28268  onaddscl  28269  onmulscl  28270  onsbnd  28273  n0cut  28326  n0bday  28344  n0fincut  28347  bdayn0p1  28361  zcuts  28399  twocut  28415  addhalfcut  28451
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