669 citations
- Saurya Das2 profiles11 · h 41
- J. Cernicharo3 profiles7 · h 65
- Joy Morris3 profiles7 · h 18
- B. Vandenbussche2 profiles6 · h 45
- C. Waelkens3 profiles6 · h 47
- D. Morris6 · h 17
- B. M. Swinyard2 profiles5
- C. Pearson2 profiles5 · h 40
- D. Ghioca5 · h 23
- J. A. D. L. Blommaert5
- L. Decin2 profiles5 · h 49
- T. Tucker5 · h 23
- Rutherford Appleton LaboratoryGB14 papers
- Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et AtmosphèresFR8 papers
- California Institute of TechnologyUS7 papers
- KU LeuvenBE7 papers
- Leiden UniversityNL7 papers
- Space Research Organisation NetherlandsNL7 papers
- Atacama Large Millimeter Submillimeter ArrayCL6 papers
- Centro de AstrobiologíaES6 papers
- European Space Astronomy CentreES6 papers
- Observatoire de ParisFR6 papers
- Sorbonne UniversitéFR6 papers
- Université Paris CitéFR6 papers
5 papers · 2 filters
Unbiased complex Hadamard matrices and bases
Darcy Best, Hadi Kharaghani
We introduce mutually unbiased complex Hadamard (MUCH) matrices and show that the number of MUCH matrices of order 2n, n odd, is at most 2 and the bound is attained for n = 1,5,9.…
On unit weighing matrices with small weight
Darcy Best, Hadi Kharaghani, Hugh Ramp
We study the structure of unit weighing matrices of order n and weights 2, 3 and 4. We show that the number of inequivalent unit weighing matrices UW(n,4) depends on the number of…
Turyn-type sequences: Classification, Enumeration and Construction
D. Best, D. Z. Djokovic, H. Kharaghani +1
Turyn-type sequences, TT(n), are quadruples of {+,-1}-sequences (A;B;C;D), with lengths n,n,n,n-1 respectively, where the sum of the nonperiodic autocorrelation functions of A,B an…
Odd-order Cayley graphs with commutator subgroup of order pq are hamiltonian
Dave Witte Morris
We show that if G is a nontrivial, finite group of odd order, whose commutator subgroup [G,G] is cyclic of order p^m q^n, where p and q are prime, then every connected Cayley graph…
Quotients of CI-groups are CI-groups
Edward Dobson, Joy Morris
We show that a quotient group of a CI-group with respect to (di)graphs is a CI-group with respect to (di)graphs.