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.
Visas. You will need a visa to enter Sri Lanka. You can get a short stay visa online at: Electronic Travel Authority (ETA). . Tourist visas are normally issued for a maximum period of 30 days. Although itâs still possible to get a tourist visa on arrival, itâs better to get one before you travel.If you arrive in Sri Lanka without a visa, you could face delays.or the most up-to-date advice on visas check with the Sri Lankan High Commission in the UK. If you experience any difficulty with the ETA System, or if youâre travelling for paid or unpaid work, you should get a visa from the Sri Lankan High Commission before you travel.