The stellar mass-to-light ratio gradient in SDSS $r-$band $\nabla (M_*/L_r)$ of a galaxy depends on its mass assembly history, which is imprinted morphology and gradients age, metallicity, initial function (IMF). Taking MaNGA sample 2051 galaxies with masses ranging from $10^9$ to $10^{12}M_\odot$ released DR15, we focus face-on galaxies, without merger bar signatures, investigate the dependenc...

The so-called block-term decomposition (BTD) tensor model, especially in its rank-$(L_r,L_r,1)$ version, has been recently receiving increasing attention due to enhanced ability of representing systems and signals that are composed \emph{blocks} rank higher than one, a scenario encountered numerous diverse applications. Uniqueness conditions fitting methods have thus thoroughly studied. Neverth...

For a finite group G $G$ , let σ ( ) $\sigma (G)$ be the number of subgroups and ι _\iota isomorphism types . Let L = r p e $L=L_r(p^e)$ denote simple Lie type, rank $r$ over field order $p^e$ characteristic $p$ If ≠ 1 $r\ne 1$ ≇ 2 B + m $L\not\cong {}^2 B_2(2^{1+2m})$ there are constants c d $c,d$ dependent on such that as $re$ grows − o 4 ⩽ \begin{align*}\hskip6.5pc p^{(c-o(1))r^4e^2} & \leqs...