## TWO CASES WITH PRIMARY IMMUNE DEFICIENCY AND NEOPLASTIC LYMPHOID PROLIFERATION

5th International Eurasian Hematology Congress, Antalya, Turkey, 15 - 19 October 2014, vol.38

• Publication Type: Conference Paper / Summary Text
• Volume: 38
• Doi Number: 10.1016/s0145-2126(14)70117-1
• City: Antalya
• Country: Turkey
• Keywords: primary immune deficiency, neoplastic lymphoid proliferation

#### Abstract

A space $X$ has a $\mathbb{Q}$-diagonal if $X^2\setminus \Delta$ has a $\mathcal{K}(\mathbb{Q})$-directed compact cover. We show that any compact space with a $\mathbb{Q}$-diagonal is metrizable, hence any Tychonorff space with a $\mathbb{Q}$-diagonal is cosmic. These give a positive answer to Problem 4.2 and Problem 4.8 in \cite{COT11} raised by Cascales, Orihuela and Tkachuk.