This document provides information about sequences and series in mathematics. It defines a sequence as an ordered set of real numbers denoted by a1, a2, a3, etc. where an represents the general term. Sequences can be finite or infinite. A sequence is said to converge to a limit l if the terms get arbitrarily close to l as n increases. Bounded sequences are those where there exists a number k such that an is always less than k. Monotonic sequences either always increase or decrease. A series is an infinite sum of terms of a sequence. The convergence, divergence or oscillation of a series depends on whether the partial sums sn tend to a finite limit, infinity, or fail to have a unique limit as