Search results
Results from the WOW.Com Content Network
In geometry, a tetrad is a set of four simply connected disjoint planar regions in the plane, each pair sharing a finite portion of common boundary. It was named by Michael R. W. Buckley in 1975 in the Journal of Recreational Mathematics .
The tetrad is the four spores produced after meiosis of a yeast or other Ascomycota, Chlamydomonas or other alga, or a plant. After parent haploids mate, they produce diploids. Under appropriate environmental conditions, diploids sporulate and undergo meiosis. The meiotic products, spores, remain packaged in the parental cell body to produce ...
The tetrad formalism is an approach to general relativity that generalizes the choice of basis for the tangent bundle from a coordinate basis to the less restrictive choice of a local basis, i.e. a locally defined set of four [a] linearly independent vector fields called a tetrad or vierbein. [1]
Only after the tetrad {,,, ¯} gets constructed can one move forward to compute the directional derivatives, spin coefficients, commutators, Weyl-NP scalars, Ricci-NP scalars and Maxwell-NP scalars and other quantities in NP formalism. There are three most commonly used methods to construct a complex null tetrad:
[6] [7] The software computes standard results assessment criteria (e.g., for the reflective and formative measurement models and the structural model, including the HTMT criterion, bootstrap based significance testing, PLSpredict, and goodness of fit) [8] and it supports additional statistical analyses (e.g., confirmatory tetrad analysis ...
In this book, a frame field is called a tetrad (not to be confused with the now standard term NP tetrad used in the Newman–Penrose formalism). See Section 98. De Felice, F.; Clarke, C. J. (1992). Relativity on Curved Manifolds. Cambridge: Cambridge University Press. ISBN 0-521-42908-0. See Chapter 4 for frames and coframes. If you ever need ...
A blank tetrad diagram. Marshall McLuhan's tetrad of media effects [1] uses a tetrad - a four-part construct - to examine the effects on society of any technology/medium (that is, a means of explaining the social processes underlying the adoption of a technology/medium) by dividing its effects into four categories and displaying them simultaneously.
From Wikipedia, the free encyclopedia. Redirect page