The Walker conjecture for chains in ℝd
The Walker conjecture for chains in ℝd
复制标题
ℝd 中链的沃克猜想
DOI:
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发表时间:
2011
影响因子:
0.8
通讯作者:
D. Schütz
中科院分区:
文献类型:
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作者:
M. Farber;J. Hausmann;D. Schütz
Abstract A chain is a configuration in ℝd of segments of length ℓ1, . . ., ℓn−1 consecutively joined to each other such that the resulting broken line connects two given points at a distance ℓn. For a fixed generic set of length parameters the space of all chains in ℝd is a closed smooth manifold of dimension (n − 2)(d − 1) − 1. In this paper we study cohomology algebras of spaces of chains. We give a complete classification of these spaces (up to equivariant diffeomorphism) in terms of linear inequalities of a special kind which are satisfied by the length parameters ℓ1, . . ., ℓn. This result is analogous to the conjecture of K. Walker which concerns the special case d=2.