According to the WordPress statistics, this blog received over 64,000 visitors and 106,000 views in 2020.

Here are the ten most-viewed posts published during the year. All are in the What Is series that I started in March 2020, and which will continue in 2021.

- What is Numerical Stability?
- What Is a Condition Number?
- What Is a Symmetric Positive Definite Matrix?
- What Is the Sylvester Equation?
- What Is Backward Error?
- What Is a Matrix Square Root?
- What Is a Fréchet Derivative?
- What Is the Complex Step Approximation?
- What Is a Cholesky Factorization?
- What Is the Hilbert Matrix?