Dear Math community,

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I have some general questions on Sturm-Liouville theory. We are planning to introduce a graduate course on Sturm-Liouville theory and every one has been asked to propose topics which might be suitable for the course.
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I would like to know the following.

Is it worth to have a course exclusively on just Sturm-Liouville theory?

If we have a course like that what are the topics that could be introduced in the course?

Would it be possible for an exclusive course on sturm-liouville theory without much background in functional analysis.

Any suggestions would be really appreciated.