  We present measurements of single- and double-differential cross-sections in
$t\bar{t}$ final states in the lepton+jets channel, unfolded to particle and
parton levels with both resolved and boosted topologies considered. Fully
corrected spectra are presented as functions of the top-quark as well as
$t\bar{t}$ system kinematic variables and jet multiplicities in data from pp
collisions at $\sqrt{s}=13$ TeV collected in 2015 and 2016 by the ATLAS
detector at the LHC, corresponding to integrated luminosity of
$36\,\mathrm{fb}^{-1}$ . Measurements provided detailed information on the
top-quark production and decay, enabling precision tests of modern Monte Carlo
generators as well as latest fixed-order Standard Model predictions. Good
agreement between the theoretical predictions and the data is observed within
reduced systematic uncertainties w.r.t. previous ATLAS measurements.
