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.
Tourist Visa. U.S. citizens crossing into Canada as tourists can stay in the country for 180 days without a visa. A few special cases can hamper this trouble-free tourist trip.If you have any criminal record, even for misdemeanors, you'll need to obtain a rehabilitation approval in advance.rossing Into Canada. You'll need your U.S. passport to travel into Canada by air. Since the Western Hemisphere Travel Initiative went into effect in 2009, you can cross into Canada by land or water with any approved travel document.