This is a preview. Log in through your library . Abstract Let $D: C^n\lbrack 0, 1 \rbrack \rightarrow \mathscr{M}$ be a derivation from the Banach algebra of $n ...

Point interactions for the n-th derivative operator in one dimension are investigated. Every such perturbed operator coincides with a selfadjoint extension of the n-th derivative operator restricted ...

Some variation is passed on via genes and some variation is the result of differences in the surroundings, or what an individual does. Types of variation Collecting data on the differences between ...

Variation is the differences between individuals of the same species, caused by genetic and environmental factors. Surveys into variation give data that are continuous, which means to come in a range, ...