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A brief review of the extremal projectors for contragredient Lie(super)symmetries (finite-dimensional simple Lie algebras, basic classical Liesuperalgebras, infinite-dimensional affine Kac-Moody algebras andsuperalgebras, as well as their quantum $q$-analogs) is given. Somebibliographic comments on the applications of extremal projectors arepresented.

Extremal projectors for contragredient Lie (super)symmetries (short review)