cdn_PaleyII {HadamardR}

cdn_PaleyII Checks Hadamard Matrix can be constructed using Paley II method.

Description

cdn_PaleyII Checks Hadamard Matrix can be constructed using Paley II method.

Usage

cdn_PaleyII(order)

Arguments

order

integer

Details

In Paley II method, If q=order/2-1 or q=order/4-1 and q is prime number and q=1 (mod 4) then this function retuns 3 otherwise NULL.

Value

3 or NULL

References

Paley, R.E.A.C. (1933). On Orthogonal matrices. J. Combin. Theory, A 57(1), 86-108.

See Also

PaleyII for Paley II construction method.

Examples

cdn_PaleyII(24)
#3
cdn_PaleyII(16)
#NULL