mnpbem-misc 0.1.2

Shared numerical and vector algebra toolkit for MNPBEM-Python.

mnpbem-misc

mnpbem-misc provides shared numerical utilities used across MNPBEM-Python submodules.

Features

• Physical unit conversions between photon energy and wavelength.
• Vector norms and normalization utilities with MATLAB-compatible behavior.
• Tensor-aware linear algebra helpers (matmul, matcross, inner, outer, spdiag).

Mathematical Formulations

1. Photon Energy-Wavelength Conversion

The conversion between photon energy and wavelength is:

$$ \lambda_{\mathrm{nm}} = \frac{C_{\mathrm{eV\cdot nm}}}{E_{\mathrm{eV}}}, \qquad C_{\mathrm{eV\cdot nm}} \approx 1239.841984 $$

2. Euclidean Vector Norm

For a vector $\mathbf{v}$:

$$ |\mathbf{v}|_2 = \sqrt{\sum_i |v_i|^2} $$

3. Vector Normalization

Normalized vector:

$$ \tilde{\mathbf{v}} = \frac{\mathbf{v}}{|\mathbf{v}_{\mathrm{ref}}|_2} $$

Implementation

• Unit conversion utilities: src/mnpbem_misc/units.py
• Vector operations: src/mnpbem_misc/vector.py
• Linear algebra helpers: src/mnpbem_misc/linalg.py

Dependencies

Runtime dependencies are installed automatically by pip:

• numpy>=1.24

Installation

pip install mnpbem-misc

Example Usage

Runnable example:

• examples/basic_usage.py

Run:

python examples/basic_usage.py

Author

• GALIH RIDHO UTOMO
• [e-mail]