Elements Of Partial Differential Equations By Ian Sneddonpdf -

| Book | Focus | Difficulty | Prerequisites | |------|-------|------------|----------------| | | Classical methods, engineering/applied | Intermediate | ODEs, calculus | | PDEs for Scientists & Engineers (Farlow) | Intuitive, visual, many examples | Beginner | Basic calculus | | Partial Differential Equations (Evans) | Modern theory, functional analysis | Advanced | Real analysis, measure theory |