Results 41 to 50 of about 802 (140)
UNIPOTENT REDUCTION AND THE POINCARÉ PROBLEM [PDF]
International Journal of Mathematics, 2006 Given a fibration f : S → ℙ1, and the associated foliation [Formula: see text], the problem of bounding the genus of the general fiber of f in terms of the sheaf [Formula: see text] is studied. Using unipotent reduction of f, several bounds are obtained, under positivity assumptions on [Formula: see text]. In Sec.4, the Poincaré problem is solved, for
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Noncommutative Spheres and Instantons
, 2003 We report on some recent work on deformation of spaces, notably deformation of spheres, describing two classes of examples. The first class of examples consists of noncommutative manifolds associated with the so called $\theta$-deformations which were ...
A. Connes +43 more
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The Group Generated by Unipotent Operators [PDF]
Proceedings of the American Mathematical Society, 1986 The group generated by unipotent n × n n \times n complex matrices is S L n ( C ) {\text {S}}{{\text {L}}_n}(C) , and every member of the latter is a product of three ...
Fong, C. K., Sourour, A. R.
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The classification of corank one forced symmetry breaking [PDF]
, 2007 Forced-symmetry breaking occurs when a bifurcation equation changes its symmetry when a parameter varies. It is to be contrasted with the phenomena of spontaneous symmetry breaking when the symmetry of the equations are kept constant but the symmetry of
Furter, JE, Sitta, AM
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Heisenberg idempotents on unipotent groups [PDF]
Mathematical Research Letters, 2010 Let G be an algebraic group over an algebraically closed field of positive characteristic such that its neutral connected component is a unipotent group. We consider a certain class of closed idempotents in the braided monoidal category (under convolution of complexes) D_G(G) known as Heisenberg idempotents.
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Can one classify finite Postnikov pieces?
, 2009 We compare the classical approach of constructing finite Postnikov systems by k-invariants and the global approach of Dwyer, Kan, and Smith. We concentrate on the case of 3-stage Postnikov pieces and provide examples where a classification is feasible ...
Moller, Jesper M., Scherer, Jerome
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Cuspidal Unipotent Brauer Characters
Journal of Algebra, 1994 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Geck, M., Hiss, G., Malle, G.
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Computing in Unipotent and Reductive Algebraic Groups [PDF]
LMS Journal of Computation and Mathematics, 2008 The unipotent groups are an important class of algebraic groups. We show that techniques used to compute with finitely generated nilpotent groups carry over to unipotent groups. We concentrate particularly on maximal unipotent subgroups of split reductive groups and show how this improves computation in the reductive group itself.
Arjeh M. Cohen +2 more
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Supercharacters of Unipotent and Solvable Groups [PDF]
Journal of Mathematical Sciences, 2018 35 ...
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The effect of cell-attachment on the group of self-equivalences of an R-localized space [PDF]
, 2014 Let R be a subring of the rationals with least non-invertible prime p. Let X = X^{n} \cup_{\alpha} (\bigcup_{j \in J} e^{q}) be a cell attachment with J finite and q small with respect to p.
Bruce Smith, Mahmoud Benkhalifa, Samuel
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