MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  mins2 Structured version   Visualization version   GIF version

Theorem mins2 27836
Description: The minimum of two surreals is less than or equal to the second. (Contributed by Scott Fenton, 14-Feb-2025.)
Assertion
Ref Expression
mins2 (𝐵 No → if(𝐴 ≤s 𝐵, 𝐴, 𝐵) ≤s 𝐵)

Proof of Theorem mins2
StepHypRef Expression
1 lesid 27831 . . 3 (𝐵 No 𝐵 ≤s 𝐵)
2 iffalse 4489 . . . 4 𝐴 ≤s 𝐵 → if(𝐴 ≤s 𝐵, 𝐴, 𝐵) = 𝐵)
32breq1d 5110 . . 3 𝐴 ≤s 𝐵 → (if(𝐴 ≤s 𝐵, 𝐴, 𝐵) ≤s 𝐵𝐵 ≤s 𝐵))
41, 3syl5ibrcom 249 . 2 (𝐵 No → (¬ 𝐴 ≤s 𝐵 → if(𝐴 ≤s 𝐵, 𝐴, 𝐵) ≤s 𝐵))
5 iftrue 4486 . . 3 (𝐴 ≤s 𝐵 → if(𝐴 ≤s 𝐵, 𝐴, 𝐵) = 𝐴)
6 id 22 . . 3 (𝐴 ≤s 𝐵𝐴 ≤s 𝐵)
75, 6eqbrtrd 5122 . 2 (𝐴 ≤s 𝐵 → if(𝐴 ≤s 𝐵, 𝐴, 𝐵) ≤s 𝐵)
84, 7pm2.61d2 182 1 (𝐵 No → if(𝐴 ≤s 𝐵, 𝐴, 𝐵) ≤s 𝐵)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wcel 2142  ifcif 4480   class class class wbr 5100   No csur 27704   ≤s cles 27808
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1815  ax-4 1829  ax-5 1930  ax-6 1987  ax-7 2028  ax-8 2144  ax-9 2152  ax-10 2175  ax-11 2191  ax-12 2212  ax-ext 2734  ax-sep 5246  ax-nul 5256  ax-pr 5390
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3or 1099  df-3an 1100  df-tru 1563  df-fal 1573  df-ex 1800  df-nf 1804  df-sb 2091  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ne 2958  df-ral 3077  df-rex 3087  df-rab 3415  df-v 3456  df-sbc 3745  df-csb 3853  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-pss 3924  df-nul 4286  df-if 4481  df-pw 4557  df-sn 4583  df-pr 4585  df-tp 4587  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-mpt 5182  df-tr 5208  df-id 5542  df-eprel 5547  df-po 5555  df-so 5556  df-fr 5600  df-we 5602  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-ord 6349  df-on 6350  df-suc 6352  df-iota 6477  df-fun 6523  df-fn 6524  df-f 6525  df-fv 6529  df-1o 8437  df-2o 8438  df-no 27707  df-lts 27708  df-les 27809
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator