Canonical partition function Spheres 6 Spherical pores 6 Surface tension 6 Adopted measures 3 Common features 3 Different geometry 3 Distribution functions 3 Ellipsoidal cavity 3 Energy dependence 3 Extended systems 3 Few body systems 3 First-order dependence 3 Fluid potentials 3 Gaussian curvatures 3 Geometry 3 Graph representation 3 Hard cores 3 Hard spheres 3 Hard walls 3 Homogeneous regions 3 Intensive variables 3 Interacting particles 3 Interaction potentials 3 Laplace equation 3 Line tension 3 Low density 3 Many-body systems 3 Partition functions 3 Reversible work 3