Information about Zonal
Zonal can refer to:
- Zonal and meridional, directions on a globe
- Zonal and poloidal, directions in a toroidal magnetically confined plasma
- Zonal polynomial, a symmetric multivariate polynomial
The terms zonal and meridional are used to describe directions on a globe. Zonal means "along a latitude circle" or "in the east-west direction"; while meridional means "along a meridian" or "in the north-south direction".
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In magnetic confinement fusion the zonal direction is essentially synonymous with the poloidal direction (i.e. the short way around the torus), the corresponding coordinate being denoted by y in the slab approximation or θ in magnetic coordinates.
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In mathematics, a zonal polynomial is a multivariate symmetric homogeneous polynomial. The zonal polynomials form a basis of the space of symmetric polynomials.
The zonal polynomials are the case of the C normalization of the Jack function.
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The zonal polynomials are the case of the C normalization of the Jack function.
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