Topic: Ratio, Root, and Test Selection

The Ratio Test with Limit Superior

Why Polynomial Decay Defeats Both Tests

Logarithmic Factors at the Ratio-Test Boundary

Binomial-Coefficient Series and the Ratio Test

Factorial Powers and Terms Involving n to the n

Variable Bases Raised to the Index

Fixed Bases Raised to the Index

Products and Quotients of Factorials

Exponential Factors with Polynomial Terms

Factorial Ratios with Shifted Indices