 Abstract additive Schwarz method

The Abstract Additive Schwarz Method (AASM) is a domain decomposition technique used for solving partial differential equations (PDEs) numerically. This method is particularly useful for problems that can be split into subdomains, allowing for parallel computation and reducing the overall computational cost. Here's a brief overview of the key concepts: 1. **Domain Decomposition**: The method partitions the computational domain into smaller subdomains.