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Results tagged with operator-theory
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user 37103
Spectrum, resolvent, numerical range, functional calculus, operator semigroups. Special classes of operators: compact, Fredholm, dissipative, differential, integral, pseudodifferential, etc.
2
votes
Show that the Laplacian operator on the Heisenberg group is negative
The factorization of the Heisenberg Laplacian is well known, see
http://www.scirp.org/journal/PaperDownload.aspx?paperID=22807
- 5,169
3
votes
Accepted
$L^2$ function in Schwartz space?
This is quite ad hoc, but your integral equation can be reverse engineered to a differential equation (Maybe this is what you really want to solve?)
$$ \partial_t\varphi=\alpha(t)f\varphi,\ \varphi(0 …
- 5,169