checkerboard

(redirected from checkerboards)
Also found in: Dictionary, Thesaurus.

Punnett,

Reginald Crundall, English geneticist, 1875-1967.
Punnett square - a grid used in genetics. Synonym(s): checkerboard

checkerboard

the pattern of a chess or draft board; used in many circumstances to display the results of mixing a specific number of variables. The variables are listed in columns designated along the horizontal border and the same or different variables in lines along the vertical border; the results of each mixing are recorded in the box where the columns and lines carrying the ingredients of the mix intersect.
References in periodicals archive ?
We say that a coin placement f for a checkerboard C is a solution if either [sigma] (s) = 1 if and only if s [member of] R or [sigma](s) = 1 if and only if s [member of] B.
1] and F for a checkerboard C described in Lemma 2.
Consider an m x n checkerboard, where n is sufficiently large.
is the trivial extension for an m x n checkerboard, then [F.
Consider a 6 x 15 checkerboard with a coin placement [f.
Let C be an m x n checkerboard with m [less than or equal to] n.
Let F be an extension of an m x n checkerboard such that F(s) = 0 for every s [member of] R.
In this section we study how one can obtain a solution for a checkerboard of certain size from a solution for another checkerboard of different size, which will lead to a proof of the Checkerboard Theorem.
The following observation describes how an extension of an m x n checkerboard induces a solution for an m x l checkerboard for some special values of l < n.
If F is an extension for an mxn checkerboard satisfying that F(s) = 0 for every s [member of] [S.
For every integer m [greater than or equal to] 2, an m x m checkerboard C has a solution such that [sigma](s) = 1 if and only if s [member of] R.
If n [equivalent to] l (mod m + 1), then an m x l checkerboard has a solution with [sigma](s) = 1 for every s [member of] R if and only if an m x n checkerboard has a solution with [sigma](s) = 1 for every s [member of] R.