Publications

PhD Dissertation

R.S. Coulter, "Planar functions and related topics in finite fields", Ph.D. dissertation, Department of Computer Science and Electrical Engineering, The University of Queensland, Australia, 1998.  [PhD Preface 90K ps file]



Journal articles

1. R.S. Coulter and R.W. Matthews, Bent polynomials over finite fields, Bull. Austral. Math. Soc. 56 (1997), 429-437.
   
   
2. R.S. Coulter and R.W. Matthews, Planar functions and planes of Lenz-Barlotti class II, Des. Codes Cryptogr. 10 (1997), 167-184.
   (The original publication is available at www.springerlink.com)
   
   
3. R.S. Coulter, Explicit evaluations of some Weil sums, Acta Arithmetica 83 (1998), 241-251.
   
   
4. R.S. Coulter, Further evaluations of Weil sums,, Acta Arithmetica 86 (1998), 217-226.
   
   
5. R.S. Coulter, G. Havas and M. Henderson, Functional decomposition of a class of wild polynomials, J. Combin. Math. Combin. Comp. 28 (1998), 87-94.
   
   
6. R.S. Coulter, On the evaluation of a class of Weil sums in characteristic 2, New Zealand J. Math. 28 (1999), 171-184.
   
   
7. R.S. Coulter and M. Henderson, A class of functions and their application in constructing semi-biplanes and association schemes, Discrete Math. 202 (1999), 21-31.
   
   
8. R.S. Coulter, The number of rational points of a class of Artin-Schreier curves, Finite Fields Appl. 8 (2002), 397-413.
   
   
9. R.S. Coulter and M. Henderson, The compositional inverse of a class of permutation polynomials over a finite field, Bull. Austral. Math. Soc. 65 (2002), 521-526.
   
   
10. R.S. Coulter and R.W. Matthews, On the permutation behaviour of Dickson polynomials of the second kind, Finite Fields Appl. 8 (2002), 519-530.
    
    
11. R.S. Coulter and M. Henderson, A note on the roots of trinomials over a finite field, Bull. Austral. Math. Soc. 69 (2004), 429-432.
    
    
12. R.S. Coulter, G. Havas and M. Henderson, On decomposition of sub-linearised polynomials, J. Austral. Math. Soc. 76 (2004), 317-328.
    
    
13. R.S. Coulter, M. Henderson and F. Lazebnik, On certain combinatorial Diophantine equations and their connection to Pythagorean numbers, Acta Arithmetica 122 (2006), 395-406.
    
    
14. R.S. Coulter, The classification of planar monomials over fields of prime square order , Proc. Amer. Math. Soc. 134 (2006), 3373--3378.
    
    
15. L.M. Batten, R.S. Coulter and M. Henderson, Extending abelian groups to rings, J. Austral. Math. Soc., 82 (2007), 297--313.
    
    
16. R.S. Coulter, M. Henderson and P. Kosick, Planar polynomials for commutative semifields with specified nuclei, Des. Codes Cryptogr. 44 (2007), 275-286.
    (The original publication is available at www.springerlink.com)
    Note: there are 2 errors in this paper (that I know of!): Firstly, the length of the summand in Theorem 4.3 is not correct. Secondly, the new example of a commutative semifield is incorrect; a correct example is
    L(X)=X^243 - X^81 + X^9 + X^3 - X and D(X) = X^246 - X^10 with t(X) = X^9 - X.
    This yields a commutative semifield of order 3^8 with Nl=GF(3) and Nm=GF(9).
    
    
17. R.S. Coulter and M. Henderson, Commutative presemifields and semifields, Adv. Math. 217 (2008), 282-304.
    
    
18. R.S. Coulter and T. Gutekunst, Special subsets of difference sets with particular emphasis on skew Hadamard difference sets, Des. Codes Cryptogr. 53 (2009), 1-12.
    (The original publication is available at www.springerlink.com)
    
    
    
19. R.S. Coulter, M. Henderson and R.W. Matthews, A note on constructing permutation polynomials, Finite Fields Appl. 15 (2009), 553-557.
    
    

    Conference proceedings (refereed)

20. A. Blokhuis, R.S. Coulter, M. Henderson and C.M. O'Keefe, Permutations amongst the Dembowski-Ostrom polynomials, Finite Fields and Applications: Proceedings of the Fifth International Conference on Finite Fields and Applications (D. Jungnickel and H. Niederreiter, eds.), 2001, pp. 37-42.
    
    
21. R.S. Coulter, G. Havas and M. Henderson, Giesbrecht's algorithm, the HFE cryptosystem, and Ore's p^s-polynomials, Computer Mathematics: Proceedings of the Fifth Asian Symposium (ASCM 2001) (K. Shirayanagi and K. Yokoyama, eds.), Lecture Notes Series on Computing, vol. 9, World Scientific, 2001, pp. 36-45.
    
    
22. M. Henderson, R.S. Coulter, E. Dawson and E. Okamoto, Modelling trust structures for public key, Information Security and Privacy, Proceedings of the 7th Australasian Conference, ACISP 2002 (L.M. Batten and J. Seberry, eds.), 2002, pp. 56-70.
    
    
23. R.S. Coulter and M. Henderson, On the splitting case of a semi-biplane construction, Proceedings of the Fifteenth Australasian Workshop on Combinatorial Algorithms, AWOCA 2004 (S-H. Hong, ed.), 2004, pp. 192-198.
    
    

    Submitted articles

24. Commutative semifields of order 243 and 3125 (with P. Kosick).


25. Solutions to everything not solved here..., in preparation.