(* Goal (u,v,w,x,y,z:R)``u+v+w+x+y+z==z+y+x+w+v+u``. *)
alias eq        /Coq/Init/Logic/Equality/eq.ind#1/1
alias eqT       /Coq/Init/Logic_Type/eqT.ind#1/1
alias R         /Coq/Reals/Rdefinitions/R.con
alias Rplus     /Coq/Reals/Rdefinitions/Rplus.con
alias Rmult     /Coq/Reals/Rdefinitions/Rmult.con
alias R1        /Coq/Reals/Rdefinitions/R1.con
alias R0        /Coq/Reals/Rdefinitions/R0.con
alias Ropp      /Coq/Reals/Rdefinitions/Ropp.con
!u:R.!v:R.!w:R.!x:R.!y:R.!z:R.
(eqT R
  (Rplus (Rplus (Rplus (Rplus (Rplus u v) w) x) y) z)
  (Rplus (Rplus (Rplus (Rplus (Rplus z y) x) w) v) u)
)