In the present paper, we consider isotype submodules of those QTAG \mathrm{QTAG} -modules that have countable length and give an in-depth study of their basic and specific properties either in parallel or in contrast to the direct sum of countably generated modules. In addition, we also examine the QTAG \mathrm{QTAG} -modules whose h-pure submodules are direct sums of countably generated modules.
机构:
Jazan Univ, Coll Appl Ind Technol, Fac Sci, Dept Chem, Jazan POB 2097, Jazan, Saudi ArabiaJazan Univ, Coll Appl Ind Technol, Fac Sci, Dept Chem, Jazan POB 2097, Jazan, Saudi Arabia