Results 271 to 280 of about 5,422,793 (299)
Some of the next articles are maybe not open access.
Extremal functions for rooted minors
Journal of Graph Theory, 2008AbstractThe graph G contains a graph H as a minor if there exist pairwise disjoint sets {Si ⊆ V(G)|i = 1,…,|V(H)|} such that for every i, G[Si] is a connected subgraph and for every edge uv in H, there exists an edge of G with one end in Su and the other end in Sv. A rooted H minor in G is a minor where each Si of the minor contains a predetermined xi ∈
openaire +2 more sources
Extremal Problems for Eigenvalue Functionals
SIAM Journal on Mathematical Analysis, 1985We consider the eigenvalues, $\lambda _n (\rho )$, of self-adjoint Sturm–Liouville systems to be real valued functionals of certain coefficient functions in the differential equation. We introduce a classical (in general nonlinear) functional $K (\rho )$ which is tangent to $\lambda _n (\rho )$ at a fixed function $\rho ^ * $.
openaire +1 more source
Assessment of Upper Extremity Function
The Journal of Hand Surgery, 2019Assessment of upper extremity function either before or after surgical treatment has been a rapidly evolving field. A reproducible, accurate, and valid assessment tool provides the ability to compare surgical interventions, evaluate physical therapy regimens, and assess novel assistive and restorative technologies.
Christina M, Webber +2 more
openaire +2 more sources
On extremal points of quasiconvex functions
Mathematical Programming, 1985zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +2 more sources
An extremal function for digraph subcontraction
Journal of Graph Theory, 1996This paper determines, to within a constant factor, the maximum size of a digraph that has no (weak) subcontraction to the complete digraph \(DK_p\) of order \(p\), an analogue of a well-known undirected graph problem. Let \(d(p)\) be defined for positive integers \(p\) by \[ d(p)= \inf\{c; e(D)\geq c|D|\text{ implies } D\succ DK_p\}, \] where \(D ...
openaire +3 more sources
Quadrature and Extremal Bandlimited Functions
SIAM Journal on Mathematical Analysis, 2013Let $\mathcal{A}(\delta)$ be the class of functions of exponential type $\delta>0$. We prove that for integrable $F\in\mathcal{A}(2\pi \delta)$ $\int_{-\infty}^\infty F(x) dx = \delta^{-1}\sum_{\xi\in\mathcal{T}_{\gamma,r}} (1-\frac{\gamma}{\pi(\xi^2+\gamma^2)+\gamma}) F(\delta^{-1}\xi)$, where $\mathcal{T}_{\gamma,r}$ is the set of zeros of $B_ ...
openaire +1 more source
Extreme distribution functions of copulas
Kybernetika, 2008Summary: We study some properties of the distribution function of the random variable \(C(X,Y)\) when the copula of the random pair \((X,Y)\) is \(M\) (respectively, \(W\)) -- the copula for which each of \(X\) and \(Y\) is almost surely an increasing (respectively, decreasing) function of the other -- and \(C\) is any copula.
openaire +2 more sources
Testing Forecast Accuracy of Expectiles and Quantiles With the Extremal Consistent Loss Functions
International Journal of Forecasting, 2021Tso-Jung Yen, Yu-Min Yen
exaly