The PoincarĂ©-constant of a domain is the smallest constant such that the estimate

holds (where is the mean value of ).

These constants are known for some classes of domains and some values of : E.g. 213 more words

The PoincarĂ©-constant of a domain is the smallest constant such that the estimate

holds (where is the mean value of ).

These constants are known for some classes of domains and some values of : E.g. 213 more words