By A Mystery Man Writer
Topological vector space - Wikipedia
The Cycas genome and the early evolution of seed plants
Cone - Wikipedia
The Beauty of Ellipses, Parabolas and Hyperbolas
Convex cone - Wikipedia
Glossary of shapes with metaphorical names - Wikiwand
Cone (category theory) - Wikipedia
algebraic topology - Understanding some steps in the proof that the inclusion map of a space into the cone of that space is a cofibration. - Mathematics Stack Exchange
Quotient space (topology) - Wikipedia