Optimal isoperimetric inequalities for complete proper minimal submanifolds in hyperbolic space

Optimal length estimates for stable CMC surfaces in 3-space forms

Optimal L^p-Riemannian Gagliardo-Nirenberg inequalities

Optimal Monotonicity of $L^p$ Integral of Conformal Invariant Green Function

Optimal paths for symmetric actions in the unitary group

Optimal test-configurations for toric varieties

Optimal transport and Perelman's reduced volume

Optimal transport and Ricci curvature for metric-measure spaces

Optimal transportation and monotonic quantities on evolving manifolds

Orbifold cohomology of hypertoric varieties

Orbifold compactness for spaces of Riemannian metrics and applications

Orbifold fibrations of Eschenburg spaces

Orbifold homeomorphism finiteness based on geometric constraints

Orbifolds as a localization of the 2-category of groupoids

Orbifolds as diffeologies

Orbifolds as Groupoids: an Introduction

Orbifolds as stacks?

Orbit decomposition of Jordan matrix algebras of order three under the automorphism groups

Orbit projections as fibrations

Orbit projections of proper Lie groupoids as fibrations