Tangency relations for sets in some classes in generalized metric spaces
Terminal subsets of convex sets in finite-dimensional real normed spaces
The affine bundle theorem in synthetic differential geometry of jet bundles.
The Cayley–Menger determinant is irreducible for .
The CC-version of Stewart's theorem.
The inner-product of iso-taxicab geometry.
The Tangent cone of an Aleksandrov space of curvature.
The visual sphere of Teichmüller space and a theorem of Masur-Wolf.
Transformations of Robertson-Walker spacetimes preserving separation zero.
Two-dimensional Helmholtz spaces.
Two-distance preserving functions.