\( \sum_{k=1}^{n} \frac{1}{k} \approx \ln n + \gamma \)

\( \int_{0}^{1} x^{p-1}(1-x)^{q-1}\,dx = B(p,q) \)

\( \nabla \times \mathbf{E} = -\frac{\partial \mathbf{B}}{\partial t} \)

\( \det(\mathbf{A}) = \prod_{i=1}^{n} \lambda_i \)