47XX 


Operator theory 

47Nxx 

Miscellaneous applications of operator theory [See also 46Nxx] 


47N10 
Applications in optimization, convex analysis, mathematical programming, economics 


47N20 
Applications to differential and integral equations 


47N30 
Applications in probability theory and statistics 


47N40 
Applications in numerical analysis [See also 65Jxx] 


47N50 
Applications in quantum physics 


47N55 
Applications in statistical physics 


47N60 
Applications in biology and other sciences 


47N70 
Applications in systems theory, circuits, etc. 


47N99 
None of the above, but in this section 