(TeX-add-style-hook "orthogonality"
 (function
  (lambda ()
    (LaTeX-add-labels
     "ortog1"
     "ortog2")
    (TeX-add-symbols
     "dis")
    (TeX-run-style-hooks
     "a4"
     "amssymb"
     "amsmath"
     "inputenc"
     "latin1"
     "latex2e"
     "art10"
     "article"
     "10pt"))))