Arrangements of HyperplanesSpringer-Verlag, 1992 - 325页 |
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共有 52 个结果,这是第 1-3 个
第9页
... point of X. ( Equivalently : no line intersects X in exactly two points . ) An S - G configuration is called linear ( planar ) if it is contained in a line ( plane ) . If IK is the field of real numbers , it is known that any S - G ...
... point of X. ( Equivalently : no line intersects X in exactly two points . ) An S - G configuration is called linear ( planar ) if it is contained in a line ( plane ) . If IK is the field of real numbers , it is known that any S - G ...
第16页
... points remain distinct throughout the motion and that the sets of points at t = 0 and t = 1 are equal . Thus we have a map ƒ : [ 0 , 1 ] → C ' such that for each t the image point ( f1 ( t ) , ... , fe ( t ) ) satisfies the condition ...
... points remain distinct throughout the motion and that the sets of points at t = 0 and t = 1 are equal . Thus we have a map ƒ : [ 0 , 1 ] → C ' such that for each t the image point ( f1 ( t ) , ... , fe ( t ) ) satisfies the condition ...
第179页
... points . This turns out to be crucial in the argument . For an arbitrary complex 2 - arrangement we may not assume that all the multiple points have real first coordinates . Thus the planes Kt may miss some multiple points . If we ...
... points . This turns out to be crucial in the argument . For an arbitrary complex 2 - arrangement we may not assume that all the multiple points have real first coordinates . Thus the planes Kt may miss some multiple points . If we ...
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常见术语和短语
A₁ affine arrangement algebra A(A arrangement and let assume b₁ basic derivations basic invariants basis for D(A braid arrangement broken circuit central arrangement chain complex choose cohomology complement complex reflection groups complexification compute Corollary Coxeter group defining polynomial Definition deformation retraction degree denote dependent exact sequence Example exterior algebra exterior product fiber finite follows from Lemma follows from Proposition follows from Theorem formula free arrangement free with exp G-orbit graded K-module graph H₁ H₂ homogeneous homotopy type hyperplanes inductively free integers irreducible isomorphism K-algebra ker(x l-arrangement lattice Lemma Let G linear linearly independent matrix maximal element Möbius function modular elements module N¹(A nonempty Note Orbits Poincaré polynomial poset Proof prove real arrangement Recall reflection arrangement restriction result Saito's criterion 4.19 Section Shephard groups simplicial subset subspace supersolvable supersolvable arrangement Suppose surjective vertex w₁ write x-independent