[TomaSusi]

Summary

Four formulas in the Bloch-wave tutorial disagree with what abtem.bloch computes. The structure-matrix formulas were already corrected for the three use_wave_eq forms. This PR fixes the rest, in markdown only, so no cell outputs change.

Formula	Tutorial before	Code (abtem/bloch/dynamical.py)
Structure factor	$\sum_j f_j \exp(-2\pi i,\mathbf{g}\cdot\mathbf{r}_j)$	$\frac{1}{\Omega}\sum_j f_j \exp(+2\pi i,\mathbf{g}\cdot\mathbf{r}_j)$ (calculate_structure_factors)
Potential	$\kappa \int F(g)\exp(2\pi i,\mathbf{g}\cdot\mathbf{r}),\mathrm{d}\mathbf{r}$	$\frac{1}{\kappa}\sum_\mathbf{g} F(\mathbf{g})\exp(-2\pi i,\mathbf{g}\cdot\mathbf{r})$ (structure_factor_to_potential)
Debye–Waller factor	$\exp(-2\pi^2\sigma^2 g)$	$\exp(-2\pi^2\sigma_j^2 g^2)$ (calculate_scattering_factors)
Coupling	$U_g = F_g$	$U_g = \frac{\sigma}{\pi\lambda\kappa} F_g = \frac{2me}{h^2} V_g$ (calculate_structure_matrix)

Here $\Omega$ is the unit-cell volume, $\kappa = 4\pi\epsilon_0 / (2\pi a_0 e)$ (abtem.core.constants.kappa) and $\sigma$ is the interaction parameter (energy2sigma). The PR also fixes two typos in the potential paragraph ("vaccum permitivity").

Checks

• Built the book locally (jupyter-book build docs, ABTEM_DOCS_VERSION=dev). All 69 equations on the page render in MathJax with no errors, and the four edited ones read as intended.
• Each formula checked against the abTEM dev source named above.

🤖 Generated with Claude Code