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Theorem neg0s 28256
Description: Negative surreal zero is surreal zero. (Contributed by Scott Fenton, 20-Aug-2024.)
Assertion
Ref Expression
neg0s ( -us ‘ 0s ) = 0s

Proof of Theorem neg0s
StepHypRef Expression
1 right0s 28124 . . . . 5 ( R ‘ 0s ) = ∅
21imaeq2i 6065 . . . 4 ( -us “ ( R ‘ 0s )) = ( -us “ ∅)
3 ima0 6084 . . . 4 ( -us “ ∅) = ∅
42, 3eqtri 2789 . . 3 ( -us “ ( R ‘ 0s )) = ∅
5 left0s 28123 . . . . 5 ( L ‘ 0s ) = ∅
65imaeq2i 6065 . . . 4 ( -us “ ( L ‘ 0s )) = ( -us “ ∅)
76, 3eqtri 2789 . . 3 ( -us “ ( L ‘ 0s )) = ∅
84, 7oveq12i 7435 . 2 (( -us “ ( R ‘ 0s )) |s ( -us “ ( L ‘ 0s ))) = (∅ |s ∅)
9 0no 28039 . . 3 0s No
10 negsval 28255 . . 3 ( 0s No → ( -us ‘ 0s ) = (( -us “ ( R ‘ 0s )) |s ( -us “ ( L ‘ 0s ))))
119, 10ax-mp 5 . 2 ( -us ‘ 0s ) = (( -us “ ( R ‘ 0s )) |s ( -us “ ( L ‘ 0s )))
12 df-0s 28037 . 2 0s = (∅ |s ∅)
138, 11, 123eqtr4i 2799 1 ( -us ‘ 0s ) = 0s
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   = wceq 1570  wcel 2146  c0 4289  cima 5669  cfv 6543  (class class class)co 7423   No csur 27841   |s ccuts 27989   0s c0s 28035   L cleft 28055   R cright 28056   -us cnegs 28249
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2738  ax-rep 5243  ax-sep 5262  ax-nul 5274  ax-pow 5341  ax-pr 5409  ax-un 7745
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2570  df-eu 2600  df-clab 2745  df-cleq 2758  df-clel 2841  df-nfc 2915  df-ne 2962  df-ral 3083  df-rex 3093  df-rmo 3372  df-reu 3373  df-rab 3420  df-v 3460  df-sbc 3748  df-csb 3857  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-pss 3928  df-nul 4290  df-if 4493  df-pw 4569  df-sn 4595  df-pr 4597  df-tp 4599  df-op 4601  df-uni 4878  df-int 4918  df-iun 4963  df-br 5115  df-opab 5179  df-mpt 5198  df-tr 5224  df-id 5561  df-eprel 5566  df-po 5574  df-so 5575  df-fr 5619  df-se 5620  df-we 5621  df-xp 5672  df-rel 5673  df-cnv 5674  df-co 5675  df-dm 5676  df-rn 5677  df-res 5678  df-ima 5679  df-pred 6309  df-ord 6370  df-on 6371  df-suc 6373  df-iota 6499  df-fun 6545  df-fn 6546  df-f 6547  df-f1 6548  df-fo 6549  df-f1o 6550  df-fv 6551  df-riota 7380  df-ov 7426  df-oprab 7427  df-mpo 7428  df-2nd 7996  df-frecs 8287  df-wrecs 8318  df-recs 8367  df-1o 8462  df-2o 8463  df-no 27844  df-lts 27845  df-bday 27846  df-slts 27988  df-cuts 27990  df-0s 28037  df-made 28057  df-old 28058  df-left 28060  df-right 28061  df-norec 28168  df-negs 28251
This theorem is used by:  neg1s  28257  lt0negs2d  28281  subsfo  28295  subsid1  28298  ltmulnegs1d  28406  mulscan2d  28409  recsex  28449  abssnid  28473  absmuls  28474  abssge0  28475  absnegs  28477  leabss  28478  elzs2  28629  elnnzs  28631  elznns  28632  z12bday  28715  bdayfin  28717  recut  28724
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