Coarse spaces over the ages

TL;DR

This paper provides a simplified, visual explanation of the principles behind designing coarse spaces, emphasizing conceptual understanding over historical detail and comprehensive coverage.

Contribution

It offers an accessible, visual-focused overview of coarse space design principles, making the topic more understandable for newcomers.

Findings

Clear visual explanations of coarse space principles

Simplified presentation enhances understanding

Focus on ideas rather than exhaustive literature

Abstract

The objective of this paper is to explain the principles of the design of a coarse space in a simplified way and by pictures. The focus is on ideas rather than on a more historically complete presentation. Also, space limitation does not allow even to mention many important methods and papers that should be rightfully included.