$R$	Radius of curvature	$s,r$	space coordinate
$u,v$	velocity components	$U_w$	surface stretching velocity
${\rho }_1,{\rho }_2$	densities of nanaparticles	${\mu }_f$	fluid dynamic viscosity
d	variable permeability	$k_1,k_2$	thermal conductivity of nanoparticle
${\rho }_f$	fluid density	$d^{*}$	variable porosity
${\nu }_f$	kinematic fluid viscosity	${\nu }_{hnf}$	kinematic viscosity of hybrid nanofluid
$k_f$	basefluid thermal conductivity	$k_{hnf}$	thermal conductivity of hybrid nanofluid
${\alpha }_f$	thermal diffusivity of base fluid	$T_w$	surface temperature
${\alpha }_{hnf}$	thermal diffusivity of hybrid nanofluid	$T_{\infty }$	ambient temperature
$\epsilon$	porosity	$k^{*}$	permeability of porous medium
$p$	pressure	$C_b$	drag coefficient
$Q$	heat generation/absorption	$\tilde{\sigma }$	Stefan Boltzmann constant
$k$	mean absorption coefficient	$Q^{*}$	heat generation/absorption parameter
$F$	non-uniform inertia coefficient	${\varphi }_1,{\varphi }_2$	solid volume fraction of nanoparticles
$Rd$	radiation parameter	${\mathrm{Re}}_s$	local Reynolds number
$\beta$	Inertia coefficient	$Br$	Brinkman number
$C_f$	skin friction coefficient	$N{u}_s$	local Nusselt number
$\sigma$	local porosity parameter	$P{e}_s$	Peclet number
$\theta$	dimensionless temperature	$f^{\prime }$	dimensionless velocity
$K$	curvature parameter	$N_g\left(\zeta \right)$	entropy generation rate
$H$	dimensionless pressure	$\zeta$	dimensionless variable
$\mathrm{Pr}$	Prandtl number	$A$	temperature exponent