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J_(nualphabeta)^mu=J_(nubetaalpha)^mu=1/2(R_(alphanubeta)^mu+R_(betanualpha)^mu), where R is the Riemann tensor.

The principal normal indicatrix of a closed space curve with nonvanishing curvature bisects the area of the unit sphere if it is embedded.

A sampling phenomenon produced when a waveform is not sampled uniformly at an interval t each time, but rather at a series of slightly shifted intervals t+Deltat_i such that ...

A bound on error-correcting codes.

The Jordan product of quantities x and y is defined by x·y=1/2(xy+yx).

The function K_n(x_0,x)=K_n(x,x_0)^_=K_n(x^_,x^__0) which is useful in the study of many polynomials.

A theory of Hamiltonian cycles.

A conjecture concerning primes.

A type of statistic which can be useful for determining asymmetry and tailedness of a population.

The orthogonal decomposition of a matrix into lower trapezoidal matrices.