Xd. Leng et J. Patera, GRADED CONTRACTIONS OF REPRESENTATIONS OF SPECIAL LINEAR LIE-ALGEBRASWITH RESPECT TO THEIR MAXIMAL PARABOLIC SUBALGEBRAS, Journal of physics. A, mathematical and general, 27(4), 1994, pp. 1233-1250
Parabolic gradings of the classical simple Lie algebras sl(N, C) (N gr
eater-than-or-equal-to 3) are described for all maximal parabolic suba
lgebras. All contractions are found which leave a maximal parabolic su
balgebra intact and which preserve a parabolic grading (parabolic cont
ractions of Lie algebras). Contractions of the irreducible representat
ions of sl(N, C) for each parabolic contraction of the Lie algebra are
the main results of the article.