We also gives a necessary condition for an LCA group to be s-pure projective in £ .
📌 3 Key Takeaways
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Objective & Hypothesis:A subgroup H of a locally compact abelian (LCA) group G is called s-pure if H nG = H for every positive integer n .
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Key Findings & Data:A proper short exact sequence 0 → A → φ B → C → 0 in the category of LCA groups is said to be s-pure if φ ( A ) is an s-pure subgroup of G .
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Conclusion & Impact:We also gives a necessary condition for an LCA group to be s-pure projective in £ .
A subgroup H of a locally compact abelian (LCA) group G is called s-pure if H nG = H for every positive integer n . A proper short exact sequence 0 → A → φ B → C → 0 in the category of LCA groups is said to be s-pure if φ ( A ) is an s-pure subgroup of G . We establish conditions under which the s-pure exact sequences split and determine those LCA groups which are s-pure injective. We also gives a necessary condition for an LCA group to be s-pure projective in £ .