cdn_miyamoto {HadamardR}

cdn_miyamoto

Description

Checks Hadamard Matrix can be constructed using Ehlich's method.

Usage

cdn_miyamoto(order)

Arguments

order

integer

Details

In Miyamoto construction, if q= n/4 and q is a prime or prime power and q=1 (mod 4),then there exists an Hadamard Matrix of order n.

Value

9 or NULL

References

Miyamoto, M. (1991). A Construction of Hadamard matrices. J. Math. Phy., 12, 311-320.

See Also

had_miyamoto for Miyamoto's construction method.

Examples

cdn_miyamoto(20)
#q=5, is a prime number and q=1(mod 4).
#9
cdn_miyamoto(16)
#NULL