Am höchsten bewertete kritische Rezension
Many pages - but so much missing
am 19. Dezember 2013
Two stars is pretty hard but the story is the following...
I studied physics and I want to learn more about partial differential equations. So I am to study a brilliant book about this matter and boundary conditions are a typical topic here.
When you reduce those equations to ODEs you will have them with initial and boundary conditions.
I thought: A book on ODEs should be about this topic, too - no, this is not.
First I searched for Sturm-Liouville boundary conditions... no hit in the index... nothing.
Okay, I thought well I search for boundary conditions... nothing....
What do I wrong? Do I search wrong or something?
Next step: I simply searched in the index for eigenvalue... not existing.
I felt sort of shocked... nothing about eigenvectors, too...
Learning linear algebra is very basic in universities, at least it was the case for me.
So why does the author speak about "roots of the characteristic equation"? Why not
applying any of those results already given?
This book is full of ODEs, full of examples and exercises, so hats off. The only reason to give it a second star.
In the end my fault: I should have had a deeper look at the index - so please do this.