One fundamental property that pairs trading requires is the instruments have to be cointegrated in order to ensure a connection between two FX currency pairs. Definition (Cointegration): An n-dimensional time series yt is cointegrated if the linear combination 1y1t + â¦ + n Ynt of the component variables is stationary.
Please note that after 31st December 2011, all U.S. nationals expect to visit Sri Lanka have to apply visa online through ETA (Electronic Travel Authorization) system. A processing fee of $30 will be charged from the applicants. The passport should be valid for at least six months from the date the visa is to be issued. 2  Business visa applications should accompany a letter from the sponsoring agency in Sri Lanka, a letter from the employing company in US and a copy of onward â return air ticket and travel itinerary.
Entry and exit stamps. Visitors to Sri Lanka visiting for tourism purposes must obtain an Electronic Travel Authorization (ETA) prior to arrival or on arrival to Sri Lanka. Holders of ETA from all countries except the 3 exempt countries obtain a visa on arrival that is valid for 30 days.The Business purpose ETA can be obtained only from Sri Lankan diplomatic missions and head office of the Department of Immigration and Emigration. Visa on arrival is not applicable to nationals of Nigeria. 2  The on arrival visa and ETA will be temporarily suspended until further notice for Republic of the Congo, Democratic Republic of the Congo, Gabon, Guinea, Guinea-Bissau, Kenya, Liberia, Mali, Sierra Leone, Sudan and Uganda.