Reference/Lecture notes on operational / functional calculus

Question

Is there any lecture notes / books you can suggest for operational calculus? I just came across it, and I'm kinda of curious, I'm not sure I'm confusing it with "functional calculus"

Thanks

Answer 1

Here are a few recommendations:

• Agnew' Differential Equations (specifically Ch.8; a freely borrowable copy is available at https://archive.org/details/differentialequa0000ralp/page/196/mode/2up)
• Dalton's Symbolic Operators (a freely borrowable copy is available at https://archive.org/details/symbolicoperator0000john)
• Berg's Introduction to the Operational Calculus
• McLachlan's Modern Operational Calculus
• Erdelyi's Operational calculus and generalized functions
• Wiener's "The operational calculus"

Here the first two references are classical books, the next three items are somewhat more contemporary books, and the final item is a classical paper.