Calabi-Yau manifold
Concept
A specific type of complex manifold hypothesized in string theory to be the shape of the six compactified extra dimensions, which would lead to an effective four-dimensional theory.
Mentioned in 2 videos
Videos Mentioning Calabi-Yau manifold

Peter Woit: Theories of Everything & Why String Theory is Not Even Wrong | Lex Fridman Podcast #246
Lex Fridman
A specific type of complex manifold hypothesized in string theory to be the shape of the six compactified extra dimensions, which would lead to an effective four-dimensional theory.

Cumrun Vafa: String Theory | Lex Fridman Podcast #204
Lex Fridman
Six-dimensional spaces (manifolds) used in string compactification, where mirror symmetry was conjectured and later confirmed.