Articles containing proofs

"Articles containing proofs" typically refers to scholarly or academic articles that present formal proof for theorems or propositions in various fields, such as mathematics, computer science, logic, and statistics. These articles usually include a detailed explanation of the problem being addressed, the methodology used, and step-by-step reasoning leading to the conclusion.

A geometric series is a series of terms that have a constant ratio between successive terms. It is formed from a geometric sequence, which is a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

The series given is a geometric series where the first term \( a \) is \( \frac{1}{2} \) and the common ratio \( r \) is \( \frac{1}{2} \).

We can represent the series \( S = \frac{1}{2} - \frac{1}{4} + \frac{1}{8} - \frac{1}{16} + \cdots \) more clearly by recognizing it as an infinite geometric series. ### Step 1: Identify the First Term and the Common Ratio The first term \( a \) of the series is \( \frac{1}{2} \).