fact: Definition eh_p_pp_gen : let EH_x_y := (rlucancel_inv (ulnat_x0 [-] urnat_y0))^ @ wlrnat_x_y @ rlucancel_inv (urnat_y1 [-] ulnat_x1) in let EH_x_z := (rlucancel_inv (ulnat_x1 [-] urnat_z0))^ @ wlrnat_x_z @ rlucancel_inv (urnat_z1 [-] ulnat_x2) in let EH_x_yz := (rlucancel_inv (ulnat_x0 [-] urnat_yz0))^ @ wlrnat_x_yz @ rlucancel_inv (urnat_yz1 [-] ulnat_x2) in EH_x_yz @ (concat_pp_p _ _ _ @ whiskerL _ EH_x_z^) = concat_p_pp _ _ _ @ whiskerR EH_x_y _ @ concat_pp_p _ _ _.
imports: HoTT(Basics Types)