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The axis in the complex plane corresponding to zero real part, R[z]=0.

A Z-number is a real number xi such that 0<=frac[(3/2)^kxi]<1/2 for all k=1, 2, ..., where frac(x) is the fractional part of x. Mahler (1968) showed that there is at most one ...

Brocard geometry is that part of triangle geometry concerned with the Brocard points, Brocard triangles, etc.

A Euclidean motion of R^n is an affine transformation whose linear part is an orthogonal transformation.

Lemoine geometry is that part of triangle geometry concerned with symmedians and symmedian points.

A nowhere-neat dissection in which squares of the same size are not allowed to share any part of a side.

A sequence of real numbers {x_n} is equidistributed on an interval [a,b] if the probability of finding x_n in any subinterval is proportional to the subinterval length. The ...

A complex number z is said to be purely imaginary if it has no real part, i.e., R[z]=0. The term is often used in preference to the simpler "imaginary" in situations where z ...

Any pair of equations giving the real part of a function as an integral of its imaginary part and the imaginary part as an integral of its real part. Dispersion relationships ...

Take K a number field and m a divisor of K. A congruence subgroup H is defined as a subgroup of the group of all fractional ideals relative prime to m (I_K^m) that contains ...