Re: [sage-devel] Hadamard Designs

2014-04-23 Thread Nathann Cohen
Yo !! > The thing is, it may be very useful for someone who has figured out how to > construct new t-designs for example. We should aim at implementing all cnstruction theorems we can find. It has to be there, invisbly working behind the scene :-P > I shall try to get this done.

Re: [sage-devel] Hadamard Designs

2014-04-23 Thread Kannappan Sampath
On Apr 23, 2014, at 1:41 PM, Nathann Cohen wrote: > Hello !! > >> And, we still have not thought about the nomenclature... :-) May be change >> the >> Hadamard design to HadamardTwoDesign and implement these as >> HadamardThreeDesign? > > Hmmm... Well, I would vote for HadamardDes

Re: [sage-devel] Hadamard Designs

2014-04-23 Thread Nathann Cohen
Hello !! > And, we still have not thought about the nomenclature… :-) May be change the > Hadamard design to HadamardTwoDesign and implement these as > HadamardThreeDesign? Hmmm... Well, I would vote for HadamardDesign and Hadamard3Design/HadamardThreeDesign. Everybody seems to agree

Re: [sage-devel] Hadamard Designs

2014-04-22 Thread Kannappan Sampath
Hi Nathann, On Apr 22, 2014, at 6:44 PM, Nathann Cohen wrote: > Y !! > > But, of course, this design extends uniquely to a (necessarily) 2-(4n, 2n, > n-1) design: the blocks of this design are blocks of the old design union a > new point infinity and complements (in the o

[sage-devel] Hadamard Designs

2014-04-15 Thread Kannappan Sampath
Hello group! At the moment in sage-6.2.beta7, in designs.HadamardDesign, we have implemented the Hadamard 2-design with paramters 2-(4n-1, 2n-1, n-1) one gets from a Hadamard matrix of order 4n. But, of course, this design extends uniquely to a (necessarily) 2-(4n, 2n, n-1) design: the blocks of