68XX 


Computer science For papers involving machine computations and programs in a specific mathematical area, see Sectionâ€“04 in that area 

68Rxx 

Discrete mathematics in relation to computer science 


68R01 
General 


68R05 
Combinatorics 


68R10 
Graph theory (including graph drawing) [See also 05Cxx, 90B10, 90B35, 90C35] 


68R15 
Combinatorics on words 


68R99 
None of the above, but in this section 