9 Answers votes newest views recent 42Demonstrating that rigour is important 22What are some correct results discovered with incorrect (or no) proofs? 2Is there a Whitney Embedding Theorem for non-smooth manifolds? 13Which Riemannian manifolds admit a finite dimensional transitive Lie group action? 5Is a rhombus rigid on a sphere or torus? And generalizations. 7edges minus vertices 9Lie group actions and f-relatedness 5A question about a one-form on Riemannian manifold 5What is the characteristic property of surjective submersions?