47XX 


Operator theory 

47Dxx 

Groups and semigroups of linear operators, their generalizations and applications 


47D03 
Groups and semigroups of linear operators {For nonlinear operators, see 47H20; see also 20M20} 


47D06 
Oneparameter semigroups and linear evolution equations [See also 34G10, 34K30] 


47D07 
Markov semigroups and applications to diffusion processes {For Markov processes, see 60Jxx} 


47D08 
SchrÃ¶dinger and FeynmanKac semigroups 


47D09 
Operator sine and cosine functions and higherorder Cauchy problems [See also 34G10] 


47D60 
$C$semigroups 


47D62 
Integrated semigroups 


47D99 
None of the above, but in this section 