Анотація:
Asymptotic formulas for large-deviation probabilities of a ladder height in a random
walk generated by a sequence of sums of i.i.d. random variables are deduced.
Two cases are considered:
a) the distribution F(x) of summands is normal with a zero mean.
b) F(x) belongs to the domain of the normal attraction of a stable law with
the exponent 0 < α < 1.
The method of Laplace transforms is applied in proofs.