[5731] On the unsymmetrical top

[5732] Les familles de cônes de même sommet qui possèdent des harmoniques

[5733] The principle of the excluded third and the Bolzano-Weierstrass lemma

[5734] Some groups of order$p$^{$r$}$q$^{$s$}with abelian subgroups of order$p$^{$r$}contained in the central

[5735] On the partial differential equation$u$_{$x$}^{2}$u$_{$xx$}+2$u$_{$x$}$u$_{$y$}$u$_{$xy$}+$u$_{$y$}^{2}$u$_{$yy$}=0