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.
There are four kinds of visas which permit a person to enter and/or stay in Sri Lanka. Visit Visa â A Visit Visa is an entry permit signifying the consent of the Sri Lankan Government for the admission of a foreign national to the country.The Visa contains details of the period of time and the condition/s of the stay. There are two sub-categories which come under visit visas 1  : Tourist Visit Visa. You hold a passport valid for a minimum period of six months from the date you arrive in Sri Lanka. 2  Sri Lanka Immigration & Emigration is satisfied that you have adequate funds for your maintenance whilst in Sri Lanka and for the payment of your return passage to the country which issued your passport.