2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/129587Picone-type identities are established for half-linear ODEs of fourth order (one-dimensional p-biLaplacian). It is shown that in the linear case they reduce to the known identities for fourth order linear ODEs. Picone-type identity known for two half-linear second-order equations is also generalised to set of equations greater than two.Classical Analysis and ODEsSpectral Theory34A34; 34A40; 34B15Picone identities for half-linear differential equations of fourth ordertext