35 research outputs found

    Triangular decomposition of right coideal subalgebras

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    Let g\mathfrak g be a Kac-Moody algebra. We show that every homogeneous right coideal subalgebra UU of the multiparameter version of the quantized universal enveloping algebra Uq(g),U_q(\mathfrak{g}), qm≠1q^m\neq 1 containing all group-like elements has a triangular decomposition U=U−⊗k[F]k[H]⊗k[G]U+U=U^-\otimes_{{\bf k}[F]} {\bf k}[H] \otimes_{{\bf k}[G]} U^+, where U−U^- and U+ U^+ are right coideal subalgebras of negative and positive quantum Borel subalgebras. However if U1 U_1 and U2 U_2 are arbitrary right coideal subalgebras of respectively positive and negative quantum Borel subalgebras, then the triangular composition U2⊗k[F]k[H]⊗k[G]U1 U_2\otimes_{{\bf k}[F]} {\bf k}[H]\otimes_{{\bf k}[G]} U_1 is a right coideal but not necessary a subalgebra. Using a recent combinatorial classification of right coideal subalgebras of the quantum Borel algebra Uq+(so2n+1),U_q^+(\mathfrak{so}_{2n+1}), we find a necessary condition for the triangular composition to be a right coideal subalgebra of Uq(so2n+1).U_q(\mathfrak{so}_{2n+1}). If qq has a finite multiplicative order t>4,t>4, similar results remain valid for homogeneous right coideal subalgebras of the multiparameter version of the small Lusztig quantum groups uq(g),u_q({\frak g}), $u_q(\frak{so}_{2n+1}).

    NEUTROPHIL LEUKOCYTE REACTION IN THE COURSE OF DIFFUSE PURULENT PERITONITIS DEVELOPMENT

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    Peritoneum biopsies from patients with various stages of peritonitis were studied electron microscopically. As distinct from the widespread opinion of a significant phagocytic activity of neutrophil leucocytes in early peritonitis this activity was not found. The authors consider this as a cause of peritonitis progression and fatality of the disease in the absence of surgical treatment. Phagocytic activity is restored after the elimination of the causative factors, i. e. after the sanative operation

    NEUTROPHIL LEUKOCYTE REACTION IN THE COURSE OF DIFFUSE PURULENT PERITONITIS DEVELOPMENT

    No full text
    Peritoneum biopsies from patients with various stages of peritonitis were studied electron microscopically. As distinct from the widespread opinion of a significant phagocytic activity of neutrophil leucocytes in early peritonitis this activity was not found. The authors consider this as a cause of peritonitis progression and fatality of the disease in the absence of surgical treatment. Phagocytic activity is restored after the elimination of the causative factors, i. e. after the sanative operation
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