Fokker block: Difference between revisions
→Second definition of a Fokker block: The {81/80, 25/24} Fokker block works this way; tempering together M~s and L~s yield different modes of 5L2s. |
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==== Fourth definition of a Fokker block ==== | ==== Fourth definition of a Fokker block ==== | ||
The ''n'' - 1 (tempered) abstract MOS scales discussed with the second definition of Fokker blocks can be put into some chosen order, and the [[product word]] taken. This entails that every Fokker block leads to a product word, and the process can be reversed, so that product words of ''n'' - 1 abstract MOS scales lead to Fokker blocks. Given the ''n'' - 1 vals obtained by taking the interior product with some interval ''q'', ''q'' can be recovered either by wedging the vals together and taking the [[The dual|dual]], or by taking the determinant of the ''n''×''n'' matrix of vals whose first row consists of indeterminates, as in the [[#Preliminaries]] section. | The ''n'' - 1 (tempered) abstract MOS scales discussed with the second definition of Fokker blocks can be put into some chosen order, and the [[product word]] taken. This entails that every Fokker block leads to a product word, and the process can be reversed, so that product words of ''n'' - 1 abstract MOS scales (''not'' ignoring mode) lead to Fokker blocks. Given the ''n'' - 1 vals obtained by taking the interior product with some interval ''q'', ''q'' can be recovered either by wedging the vals together and taking the [[The dual|dual]], or by taking the determinant of the ''n''×''n'' matrix of vals whose first row consists of indeterminates, as in the [[#Preliminaries]] section. | ||
=== Determining if a scale is a Fokker block === | === Determining if a scale is a Fokker block === | ||