Definitions
from The Century Dictionary.
- In mathematics, said of a set of variables subject to undergo linear transformation simultaneously with another set (to which the first is said to be contragredient), the two transformations being inverse to one another
- then the contragredience of the two sets will consist in the second set
ξ,η,ζ being subject to undergo a simultaneous transformation to E, H, Z, defined by the equations
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective mathematics Generally, an object contragredient to another is the object inversed and transposed.
- adjective mathematics A contragredient representation in linear algebra is the transpose of the former representation of an inverse object.
- adjective mathematics A contragredient matrix is a transpose of an inverse matrix.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Neologism based on the English prefix contra- and gredient. Gredient may be based on the English word grid, since the mathematical objects referred to as contragredient are often represented as grids of numbers.
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