constant contraHom
constant coHom
constant ncHom
constant ncHom_alt
constant ncHom_R
constant is_cenBimodule
constant is_cenSubbimodule
constant ncExt
constant ncExt_R
constant nctors
constant altExt_R
constant tensorMaps
constant ncTensorMod
constant ncTor
constant Hochschild
constant Lie
constant AllExts
constant dmodualtest
constant dmodoublext
constant part_Ext_R