### On bent functions with zero second derivatives

##### Abstract

It is proved that a bent function has zero second derivative with respect to $a$, $b$, $a \ne b$, if and only if it is affine on all the flats parallel to the two dimensional subspace $V = \langle a, b \rangle$.

Available format(s)
-- withdrawn --
Publication info
Published elsewhere. Unknown where it was published
Keywords
Bent functions
Contact author(s)
sugata70 @ rediffmail com
History
2007-03-01: withdrawn