João M. Pereira

activity

20142022

most citedThe Weyl-Heisenberg ensemble: hyperuniformity and higher Landau levels

31 citations · 81 across the 9 of their papers we have counts for

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2 papers · 1 filter

math.FA2015★ 2 cited

Pseudo prolate spheroidal functions

Luís Daniel Abreu, João M. Pereira

Let $D_{T}$ and $B_{Ω}$ denote the operators which cut the time content outside $T$ and the frequency content outside $Ω$ , respectively. The prolate spheroidal functions are the ei…

math.FA2014★ 18 cited

Measures of localization and quantitative Nyquist densities

Luís Daniel Abreu, João M. Pereira

We obtain a refinement of the degrees of freedom estimate of Landau and Pollak. More precisely, we estimate, in terms of $ε$ , the increase in the degrees of freedom resulting upon…