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QA71-90 Instruments and machines
QA75-76.95 Calculating machines
QA75.5-76.95 Electronic computers. Computer science
QA76.75-76.765 Computer software
QA101-(145) Elementary mathematics. Arithmetic
QA150-272.5 Algebra. Linear and multilinear. Matrices. Approximation theory
QA273-280 Probabilities. Mathematical statistics. Numerical analysis
QA299.6-433 Analysis - Calculus. Functional analysis. Theory of functions. Differential equations
QA440-699 Geometry. Trigonometry. Topology
QA801-939 Analytic mechanics - Statistics. Kinematics. Dynamics. Fluid mechanics. Elasticity; Plasticity
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