**Actuarial notation** is a shorthand method to allow actuaries to record mathematical formulas that deal with interest rates and life tables.

Traditional notation uses a halo system where symbols are placed as superscript or subscript before or after the main letter. Example notation using the halo system can be seen below.

Various proposals have been made to adopt a linear system where all the notation would be on a single line without the use of superscripts or subscripts. Such a method would be useful for computing where representation of the halo system can be extremely difficult. However, a standard linear system has yet to emerge.

Read more about Actuarial Notation: Force of Mortality

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**Actuarial Notation**- Force of Mortality

... In a life table, we consider the probability of a person dying from age (x), that is, a person age x, to (x+1), a person age x + 1, called qx ... In the continuous case, we could also consider the conditional probability of a person, who attained age (x), dying from age (x) to age (x+Δx) as ...

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