Topics in matrix analysis
GL(m,2) acting on R(r,m)/R(r−1,m)
Discrete Mathematics
Finite fields
On the asymptotic number of inequivalent binary self-dual codes
Journal of Combinatorial Theory Series A
International Journal of Information and Coding Theory
Parametrization of self-dual codes by orthogonal matrices
Finite Fields and Their Applications
The selfnegadual properties of generalised quadratic Boolean functions
Designs, Codes and Cryptography
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We classify all self dual and anti self dual quadratic bent functions in 2n variables under the action of the orthogonal group $${{O}(2n,\mathbb F_2)}$$ . This is done through a classification of all 2n 脳 2n involutory alternating matrices over $${\mathbb F_2}$$ under the action of the orthogonal group. The sizes of the $${{O}(2n,\mathbb F_2)}$$ -orbits of self dual and anti self dual quadratic bent functions are determined explicitly.