‎we characterize those groups $g$ and vector spaces $v$ such that $v$ is a faithful irreducible $g$-module and such that each $v$ in $v$ is centralized by a $g$-conjugate of a fixed non-identity element of the fitting subgroup $f(g)$ of $g$‎. ‎we also determine those $v$ and $g$ for which $v$ is a faithful quasi-primitive $g$-module and $f(g)$ has no regular orbit‎. ‎we do use these to show in ...

Surface distortions to an otherwise planar channel flow introduce vorticity perturbations. In Newtonian fluids, the induced by small surface undulations on lower wall is advected background and diffuses into fluid. When fluid viscoelastic, we identify new mechanisms which significant perturbations can be generated in both inertialess elasto-inertial flows. We focus case where lengthscale of dis...

The efficient sensing of weak environmental perturbations via special degeneracies called exceptional points in non-Hermitian systems has attracted enormous attention the last few decades. However, contrast to extensive literature on parity-time (PT) symmetric systems, exotic hallmarks anti-PT are only beginning be realized now. Very recently, a characteristic resonance vanishing linewidth was ...

Take a look around at your fellow Canadians, because they are slowly disappearing. All of the scenarios projected by Statistics Canada about population growth in Canada over the next 50 years show a “negative increase” (you’ve got to love bureaucratic language) in the number of births minus deaths.1 In the low-growth scenario for the Canadian population, the first year in which there will be mo...

Background: Drug-metabolizing enzymes play a role in chemical carcinogenesis through enzymatic activation of procarcinogens to biologically reactive metabolites. The role of gene polymorphisms of several cytochrome P450 enzymes in digestive cancer risk has been extensively investigated. However, the drug-metabolizing enzymes with the broader substrate specificity, CYP3A4 and CYP3A5, have not be...

We consider scalar-vector-tensor (SVT) theories with second-order equations of motion and tensor propagation speed equivalent to the light. Under sub-horizon quasi-static approximations we find analytical formulae for an effective dark energy fluid, i.e., sound speed, anisotropic stress as well density pressure. took advantage our general, fluid description showed that it is possible design SVT...

Electron pumping through energy-gapped systems is restricted for vanishing local density of states at the Fermi level. In this paper, we propose a topological Su–Schrieffer–Heeger (SSH) chain between unbiased leads as an effective electron pump. We analyze transport properties topologically trivial and nontrivial in presence external time-dependent forces form one-Gaussian or two-Gaussian pertu...