Px
probability of survival from age x to age x+1
qx
probability of death between age x and age x+1
ω
age by which everyone dies in the given populaton
qω-1
=1
lx
Number of lives age x in a “hypothetical” population which experiences the mortality given by a specific vector of qx factors
l0
Number of lives age 0 in our “hypothetical” population- is an arbitrary number referred to as the “radix” of the life table
dx
Number of lives in our “hypothetical” population who die between the ages of x and x+1 magnitude depends on the radix
dx=lx, qx=dx/lx
Lx
total “person years” lived by the lx people now age x between the ages of x and x+1
OR
Average number of people alive in our population between the ages of x and x+1
Tx
Total “person-years” lived by the lx people now age x between the ages of x and ω
K
random variable representing the number of whole years (integers) lived by a person now aged x
Kx
curtate future years livd by (x)
(x)
A person now aged x
