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Hence, the construction of mutually orthogonal Latin squares is an important combinatorial problem.
An unsolved question is whether there can exist a complete set of mutually orthogonal Latin squares of order k if k is not a prime power.
Two orthogonal Latin squares of order 4 are exhibited in Figure 2. A set of mutually orthogonal Latin squares is a set of Latin squares any two of which are orthogonal.
We construct families of mutually orthogonal gerechte designs of order qr+s with rectangular regions of size qr×qs.
It is shown that "the isogausses" and the coronal isophotes create two systems of mutually orthogonal curves.
(1) At most, a size of mutually orthogonal FH pattern can be obtained for the independent hopping scheme.
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The two boundary cases are well known designs: an Hd(2n+1,2n+2) is a Room d-cube of side 2n+1 and the existence of d mutually orthogonal latin squares of order n+1 implies the existence of an Hd(n+1,2n+2).
The bounds obtained give equivalent bounds for the numbers of distinct and nonisomorphic sets of g−2 mutually orthogonal Latin squares of order n in the corresponding cases.
For n⩾4, k≠4, optimal examples of (n×n)/k semi-Latin squares with k⩾n have been identified only in the case where k is a multiple of n−1 such that there exists a set of k mutually orthogonal Latin squares of order n.
During spot measurements, the sensor assembly was orientated for 1-min periods in each of three mutually orthogonal axes by means of locating pins.
During experiments, animals were seated within a primate chair modified to allow free motion of the head near the center of three mutually orthogonal magnetic fields (Crawford et al. 1999).
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