SpacesApple.com: Leopard Sneak Peek - Spaces was a virtual desktop feature of Mac OS X, introduced in version 10.

Differential Geometry and Symmetric Spaces
Watersheds in Digital Spaces: An Efficient Algorithm Based on Immersion Simulations
Shape Manifolds, Procrustean Metrics, and Complex Projective Spaces
M-tree: An Efficient Access Method for Similarity Search in Metric Spaces
Probabilistic Roadmaps for Path Planning in High-Dimensional Configuration Spaces
Soille, P.: Watersheds in digital spaces: an efficient algorithm based on immersion simulations. IEEE Trans. on PAMI 13(6), 583-598
Exploring the applicability of the prospect-refuge theory in determining the appeal of public spaces
A Quantitative Analysis and Performance Study for Similarity-Search Methods in High-Dimensional Spaces
Differential Evolution – A Simple and Efficient Heuristic for Global Optimization over Continuous Spaces
An Introduction to Support Vector Machines and Other Kernel-based Learning Methods: Kernel-Induced Feature Spaces