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.
You can visit Canada from the U.S. with you passport and stay for up to 180 days without a visa. If youâd like to stay longer, apply to extend your stay at least 30 days before your time limit expires.hether youâll need a visa in Canada depends on the reason you're going. As a United States passport holder, you can visit Canada for tourism without a visa if you donât stay longer than 180 days. If you plan on any other activities during your stay, youâre likely to need a visa.