68Q12 Quantum algorithms and complexity [See also  68Q05,  <a href="#code:81P68">81P68</a>]

68Q15 Complexity classes (hierarchies, relations among complexity classes, etc.) [See also <a href="#code:03D15">03D15</a>, 68Q17, 68Q19]

68Q17 Computational difficulty of problems (lower bounds, completeness, difficulty of approximation, etc.) [See also 68Q15]

68Q19 Descriptive complexity and finite models [See also <a href="#code:03C13">03C13</a>]

68Q25 Analysis of algorithms and problem complexity [See also <a href="#code:68W40">68W40</a>]

68Q30 Algorithmic information theory (Kolmogorov complexity, etc.) [See also <a href="#code:03D32">03D32</a>]

68Q32 Computational learning theory [See also <a href="#code:68T05">68T05</a>]

68Q45 Formal languages and automata [See also <a href="#code:03D05">03D05</a>, 68Q70, <a href="#code:94A45">94A45</a>]

68Q60 Specification and verification (program logics, model checking, etc.) [See also <a href="#code:03B70">03B70</a>]

68Q65 Abstract data types; algebraic specification [See also <a href="#code:18C50">18C50</a>]

68Q70 Algebraic theory of languages and automata [See also <a href="#code:18B20">18B20</a>, <a href="#code:20M35">20M35</a>]

68Q80 Cellular automata [See also <a href="#code:37B15">37B15</a>]

68Q85 Models and methods for concurrent and distributed computing (process algebras, bisimulation, transition nets, etc.)

68Q87 Probability in computer science (algorithm analysis, random structures, phase transitions, etc.) [See also <a href="#code:68W20">68W20</a>, <a href="#code:68W40">68W40</a>]

68Q99 None of the above, but in this section

68Rxx Discrete mathematics in relation to computer science

68R10 Graph theory (including graph drawing) [See also <a href="#code:05Cxx">05Cxx</a>, <a href="#code:90B10">90B10</a>, <a href="#code:90B35">90B35</a>, <a href="#code:90C35">90C35</a>]

68R99 None of the above, but in this section

68T05 Learning and adaptive systems [See also <a href="#code:68Q32">68Q32</a>, <a href="#code:91E40">91E40</a>]

68T10 Pattern recognition, speech recognition {For cluster analysis, see <a href="#code:62H30">62H30</a>}