Results 11 to 20 of about 866,589 (283)
Invariant divisors and equivariant line bundles
Forum of Mathematics, SigmaScalar relative invariants play an important role in the theory of group actions on a manifold as their zero sets are invariant hypersurfaces. Relative invariants are central in many applications, where they often are treated locally since an invariant ...
Boris Kruglikov, Eivind Schneider
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On Invariant Line Arrangements [PDF]
Discrete & Computational Geometry, 2014 The authors study the set of projective line arrangements that are invariant under a polynomial differential equation of degree four. They trace the origin of their problem to a paper by Darboux where he explained a new method for determining integrals of polynomial differential equations [\textit{G. Darboux}, Darboux Bull.
De Moura Canaan, R., Coutinho, S. C.
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η-invariants and determinant lines [PDF]
Journal of Mathematical Physics, 1994 The η-invariant of an odd dimensional manifold with boundary is investigated. The natural boundary condition for this problem requires a trivialization of the kernel of the Dirac operator on the boundary. The dependence of the η-invariant on this trivialization is best encoded by the statement that the exponential of the η-invariant lives in the ...
Dai, Xianzhe, Freed, Daniel S.
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Asymptotic Invariants of Line Bundles [PDF]
Pure and Applied Mathematics Quarterly, 2005 Informal expository overview, 20 ...
Ein, Lawrence +4 more
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Chemical Engineering Transactions, 2013 This paper proposes a fast robust model predictive control using polyhedral invariant sets for uncertain polytopic discrete-time systems. A sequence of nested polyhedral invariant sets corresponding to a sequence of state feedback gains is constructed ...
S. Kheawhom, P. Bumroongsri
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Effective Actions near Singularities [PDF]
, 2003 We study the heterotic string compactified on K3 x T^2 near the line T=U, where the effective action becomes singular due to an SU(2) gauge symmetry enhancement.
A.P. Prudnikov +11 more
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Tropical descendant invariants with line constraints
Journal of the London Mathematical Society, 2023 AbstractVia correspondence theorems, rational log Gromov–Witten invariants of the plane can be computed in terms of tropical geometry. For many cases, there exists a range of algorithms to compute tropically: for instance, there are (generalised) lattice path counts and floor diagram techniques. So far, the cases for which there exist algorithms do not
Blomme, Thomas, Markwig, Hannah
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Topological Invariance under Line Graph Transformations [PDF]
Symmetry, 2012 It is shown that the line graph transformation G ↦ L(G) of a graph G preserves an isomorphic copy of G as the nerve of a finite simplicial complex K which is naturally associated with the Krausz decomposition of L(G). As a consequence, the homology of K is isomorphic to that of G. This homology invariance algebraically confirms several well known graph
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SIFT-GVF-based lung edge correction method for correcting the lung region in CT images
PLoS ONE, 2023 Juxtapleural nodules were excluded from the segmented lung region in the Hounsfield unit threshold-based segmentation method. To re-include those regions in the lung region, a new approach was presented using scale-invariant feature transform and ...
Xin Li +4 more
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Seshadri constants, Diophantine approximation, and Roth's Theorem for arbitrary varieties [PDF]
, 2015 In this paper, we associate an invariant $\alpha_{x}(L)$ to an algebraic point $x$ on an algebraic variety $X$ with an ample line bundle $L$. The invariant $\alpha$ measures how well $x$ can be approximated by rational points on $X$, with respect to the ...
McKinnon, David, Roth, Mike
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