Nour El Houda Bouzara

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Questions related from Nour El Houda Bouzara

What is the difference between evolution systems and semi-groups ?

and how to know weither use evolution systems or semi-groups to solve differential equations

06 June 2016 5,388 0 View

How we can calculate an essential spectrum of a differential operator?

I know that since differential operators are not bounded then generaly we tend to use their inverses (integral) to study their characteristics, does we do the same for the case of essential Spectrum?

04 April 2015 9,267 5 View