Cinnabar Theater the Aspen Music Festival. She led the Cinnabar Opera Theater in over thirty-five opera productions, including the 2010 West Coast premiere of Tobias Picker's "Emmeline" in addition to conducting productions for Lamplighters Music Theatre, Boise Opera and as Music Director of the Harrower Summer Opera Workshop at the University of Georgia. In 1988, Shuman and Klebe created the Petaluma Summer Music Festival as part of the Cinnabar Arts Corporation, in addition to developing the Cinnabar Chamber Singers and the Cinnabar Choral Ensemble. The theater has also served as a home for dancer/choreographer Ann Woodhead's Mercury Moving Company and the experimental
Ore extension which means that "δ" is a homomorphism of abelian groups satisfying Then the Ore extension "R"["x";"σ","δ"], also called a skew polynomial ring, is the noncommutative ring obtained by giving the ring of polynomials "R"["x"] a new multiplication, subject to the identity If "δ" = 0 (i.e., is the zero map) then the Ore extension is denoted "R"["x"; "σ"]. If "σ" = 1 (i.e., the identity map) then the Ore extension is denoted "R"["x","δ"] and is called a differential polynomial ring. The Weyl algebras are Ore extensions, with "R" any commutative polynomial ring, "σ" the identity ring endomorphism, and "δ" the