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1. 

   Risk of investing in volatility products: A regime-switching approach

   Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Leon Li --- , New Zealand

   Volatility indexes provide a tool for investors to speculate and trade on market sentiment regarding future volatility. The risk of trading on volatility indexes can be measured by their second moments, namely, variance and correlation. This study considers the four...

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2. 

   More on cardinality bounds involving the weak Lindelöf degree

   Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Bella --- University of Catania, Italy N. Carlson --- California Lutheran University, USA I. Gotchev --- Central Connecticut State University, USA

   We give several new bounds for the cardinality of a Hausdorff topological space X involving the weak Lindelöf degree ωL(X). In particular, we show that if X is extremally disconnected, then |X| ≤ 2 ωL (X)πχ(X)ψ(X), and if X...

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