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I'd be grateful if anyone could explain why 'partial incomplete block design' is the terminology could add that.
Charles Matthews 19:48, 19 Nov 2004 (UTC)
I plan to move "T-design" back to "Block design". Please do not move it back to "T-design" (or "t-design"). The general term is "block design" or in full "balanced incomplete block design". A particular kind of block design is called a t-design. (The t, properly speaking, is a number.) The conventions of the field make the term "block design" the best one for an article (unless you prefer the long name, which is not as much used nowadays). I am open to being shown wrong on this, but my experience indicates that's what experts would say. Zaslav 10:52, 26 February 2007 (UTC)
As usual with stuff concerning graph theory/combinatorics, conventions differ. in my syllabus it saids every 2-design is a block and vice versa
But more importantly , it says : is a t-design , when :
now the r defined here , is the number of blocks through one point x now some basic counting teaches me immediately :
My syllabus apparently backs me up on this formula.
My question, why should this be included in the definition when it is abundant as it (apparently) can be calculated immediately from the rest
My apologies if I am wrong, I am just a student and most of maths is still new to me, but I am very busy with it all.
Kind regards, Evilbu 16:58, 15 February 2006 (UTC)
Currently, the article is "purely" Design-theoretic and is lacking a Coding Theory perspective. A case, for example, is an
error-correcting code whose codewords are the lines of a
symmetric (v,k,λ)-design. If I'm not mistaken this is what is called a
Balanced incomplete block design code.
Omnipedian (
talk) 14:24, 26 November 2008 (UTC)
The link http://batman.cs.dal.ca/~peter/designdb/ is currently broken. Is there any active database? — Preceding unsigned comment added by 193.144.198.250 ( talk) 12:30, 21 March 2013 (UTC)
I have hidden, but not removed, a recently added example of a BIBD. My concerns are that the table introduced statistical terminology without any explanation and it wasn't clear what the example was. A small example is a fine addition to the article, but this one needs more work before it is presentable. Since this was computer generated, perhaps a subsection of applications could be added to talk about such generation and the fields in which it is useful. -- Bill Cherowitzo ( talk) 19:40, 1 February 2017 (UTC)