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The resolvability of A-sets of uncountable dispersion character and CA-sets and PCA-sets without isolated points in Hausdorff compacta is proved. Examples of a Hausdorff countably compact irresolvable space, a Hausdorff σ-compact irresolvable space of uncountable dispersion character and two σ-compact Tychonoff spaces whose difference is an irresolvable space of uncountable dispersion character are...
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