We study the notion of singular tropical hypersurfaces of any dimension. We characterize the singular points in terms of tropical Euler derivatives and we give an algorithm to compute all singular points. We also describe non-transversal intersection...
$\ell_1$ regularization is used to preserve edges or enforce sparsity in a solution to an inverse problem. We investigate the Split Bregman and the Majorization-Minimization iterative methods that turn this non-smooth minimization problem into a sequ...
Has there ever been a time when you gave a blowjob to a completely straight friend? Is this a common thing? (I'm sure it's not, but then how uncommon/nonexistent is it?) This relates to something else...
The minimum rank of a simple graph $G$ is defined to be the smallest possible rank over all symmetric real matrices whose $ij$th entry (for $i\neq j$) is nonzero whenever $\{i,j\}$ is an edge in $G$ and is zero otherwise. Minimum rank is a difficul...
Points: 1525 | Comments: 546 | Author: garyclarke27
I discuss approaches to optimally remove noise from images. A generalization of Wiener filtering to Non-Gaussian distributions and wavelets is described, as well as an approach to measure the errors in the reconstructed images. We argue that the wa...
There is a well known link between (maximal) polar representations and isotropy representations of symmetric spaces provided by Dadok. Moreover, the theory by Tits and Burns-Spatzier provides a link between irreducible symmetric spaces of non-compact...
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Hi everyone, I'm a 21 year old Italian guy and I just found out that Vampire Weekend will be performing at a festival in Romano d'Ezzelino (VI) in Italy, none of my friends listen to similar music or ...
In this letter we establish a connection of Picard-type elliptic solutions of Painleve VI equation with the special solutions of the non-stationary Lame equation. The latter appeared in the study of the ground state properties of Baxter's solvable...
The Electron-Ion Collider, a next generation electron-hadron and electron-nuclei scattering facility, will be built at Brookhaven National Laboratory. The wealth of new data will shape research in hadron physics, from nonperturbative QCD techniques t...
We consider a class of evolution equations describing population dynamics in the presence of a carrying capacity depending on the population with delay. In an earlier work, we presented an exhaustive classification of the logistic equation where the...
A folklore result due to M.W. Hirsch states that most competitive maps admit a carrying simplex, i.e., an invariant hypersurface which attracts all nontrivial orbits. The common approach in the study of these maps is to focus on the dynamical behavio...
A brief non-technical account of the current status of collapse models....
Stepfather or stepdad refers to a non-biological father who has not opted to adopt his wife's child(ren). Stepfather, The Stepfather or Stepdad may also refer
A Boolean predicate $A$ is defined to be promise-useful if $\operatorname{PCSP}(A,B)$ is tractable for some non-trivial $B$ and otherwise it is promise-useless. We initiate investigations of this notion and derive sufficient conditions for both promi...
Accurate enumeration of Salmonella spp. is important for assessing whether this pathogen has survived composting. Recent literature has reported that enumeration of Salmonella spp. using standard microbiological methods has a numbers of disadvantages...
The relatively low concentration of pathogen indicators, such Salmonella, in composting sometimes causes a problem with detection when using the conventional techniques. The presence of viable but non-culturable (VBNC) organisms is also a potential p...
In biology exponential integrate-and-fire models are compact and computationally efficient nonlinear spiking neuron models with one or two variables.
A community for sexy, non-nude 4K desktop wallpapers. Most of these were upscaled or cropped by me, so try to give me credit if you repost them somewhere.