The magnitude of metric spaces
The magnitude of metric spaces
复制标题
度量空间的大小
作者:
T. Leinster
Magnitude is a real-valued invariant of metric spaces, analogous to the Euler characteristic of topological spaces and the cardinality of sets. The definition of magnitude is a special case of a general categorical definition that clarifies the analogies between various cardinality-like invariants in mathematics. Although this motivation is a world away from geometric measure, magnitude, when applied to subsets of R^n, turns out to be intimately related to invariants such as volume, surface area, perimeter and dimension. We describe several aspects of this relationship, providing evidence for a conjecture (first stated in arXiv:0908.1582) that magnitude subsumes all the most important invariants of classical integral geometry.
影响因子:
0.5
作者:
Leinster T
通讯作者:
Leinster T
影响因子:
0.9
作者:
Leinster T
通讯作者:
Leinster T
影响因子:
1.1
作者:
Leinster T
通讯作者:
Leinster T