Films about invisibility often explore themes of isolation, power, and the implications of existing in a state that allows one to be unseen by others. Here are some notable examples: 1. **The Invisible Man (1933 and 2020)** - Based on H.G. Wells' novel, this story centers around a scientist who discovers a way to become invisible but struggles with the madness that accompanies his newfound power. The 2020 adaptation updates the story, focusing on themes of abuse and trauma.
Category theory is a branch of mathematics that focuses on the abstract study of mathematical structures and relationships between them. It provides a unifying framework to understand various mathematical concepts across different fields by focusing on the relationships (morphisms) between objects rather than the objects themselves. Here are some key concepts in category theory: 1. **Categories**: A category consists of objects and morphisms (arrows) that map between these objects. Each morphism has a source object and a target object.