# extremal

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## ex·trem·al

(ĭk-strē′məl)
1. Mathematics Of or relating to maximal or minimal values or degrees of inclusiveness.
2. Having or characterized by extreme properties or conditions: extremal black holes.

## extremal

(ɪkˈstriːməl)
n
(Logic) maths logic the clause in a recursive definition that specifies that no items other than those generated by the stated rules fall within the definition, as in 1 is an integer, if n is an integer so is n+1, and nothing else is
References in periodicals archive ?
Sections cover extremal functionals, invariant functionals, the invariance of fields, and trans-Noether invariance.
i] is all smooth extremal rational curves since [X.
Robust text detection in natural images with edge-enhanced maximally stable extremal regions," in Proc.
In the iterative algorithm described in [7] and [8], extremal amplitudes of the multisine signal are clipped by a fixed level.
McNeil uses a similar approach and shows how to correct for the clustering of extremal events caused by stochastic volatility.
Stroke Width Transform (SWT) [8] and Maximally Stable Extremal Region (MSER) [9] are widely used as basic algorithms due to their efficiency and stability, but they perform poorly under severe conditions, such as blur, non-uniform illumination and disconnected strokes.
For example, Ramanujan complexes (the HD versions of the "optimal" expanders, the Ramanujan graphs) have already been useful for extremal hypergraph theory.
Este documento esto dedicado a presentar una prueba de un problema extremal conocido en las funciones univalentes, concretamente estimar la longitud de arco de la imagen de la circunferencia [valor absolute de (z)] = r bajo la aplicacion de la funcion de Koebe.
Keywords: permutations, packing densities, extremal combinatorics, monotone subsequences
Extremal optimization method of PID control system was got by analyzing PID controller and building compound index of optimization performance.
This notably implies the NP-completeness of several problems asking whether G is an extremal graph (in terms of needed colours) for some vertex-colouring problems.
5] characterized the extremal Wiener polarity index of trees with a given diameter.
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