# Changelog

[TeachBooks Versioning](https://teachbooks.io/manual/features/versioning.html) is used (a special type of semantic numbering for educational purposes) with generic format `v<academic_year>.<additions>.<errata>`, with an additional `.pre-release` added for incomplete books.

## 2025-12-19: v2025.15.0.pre-release
- Added [](./eva/intro.md)

## 2025-12-17: v2025.14.2.pre-release
- Minor changes to [](./fem/numerical_integration.md)

## 2025-12-15: v2025.14.1.pre-release
- Made MLP application page section of NN page
- Removed references to live code

## 2025-12-12: v2025.14.0.pre-release
- Added [](./ml/overview.md)

## 2025-12-05: v2025.13.0.pre-release
- Added [](./optimization/overview.md)
- Added [](programming/week_2_5)

## 2025-12-02: v2025.12.1.pre-release
- Fixed two cross-references 

## 2025-11-28: v2025.12.0.pre-release
- Added [](./time_series/intro.md)
- Added [](programming/week_2_4)

## 2025-11-21: v2025.11.0.pre-release
- Added [](./signal/intro.md)
- Added [](programming/week_2_3)

## 2025-11-18: v2025.10.2.pre-release
- Fix mistake in box on integration by parts / divergence theorem on [](./fem/poisson2d.md)

## 2025-11-18: v2025.10.1.pre-release
- Cosmetic change on [](./fem/matrix.ipynb) `EA*np.dot(np.transpose(B), B)*w_i` $\leftarrow$ `EA * B.T @ B * w_i` 

## 2025-11-14: v2025.10.0.pre-release
- Added [](./fem/intro.md)
- Added [](programming/week_2_2)

## 2025-11-07: v2025.9.0.pre-release
- Added [](./numerical_methods_for_PDEs/overview.md)
- Added [](programming/week_2_1)

## 2025-10-06: v2025.8.0.pre-release
- Added [](./observation_theory/overview.md)

## 2025-10-06: v2025.7.1.pre-release
- Missing parentheses in [](./propagation_uncertainty/0_Transforming_random_variables.md)
- Expanded [](./propagation_uncertainty/2_Monte_Carlo_simulations.md)

## 2025-10-03: v2025.7.0.pre-release
- Added [](./propagation_uncertainty/overview.md)
- Added [](./programming/week_1_6.md)

## 2025-09-30: v2025.6.2.pre-release
Fixed typo in first definition of [bivariate Gaussian: Added squares in the first and last terms of the exponent](./multivariate/Bivariate.md).

## 2025-09-30: v2025.6.1.pre-release
Fixed typo in [the exercise of defining a covariance matrix in the Bivariate Gaussian page](./multivariate/bivariate_gaussian.md).

## 2025-09-26: v2025.6.0.pre-release
Added [](./multivariate/overview.md)

## 2025-09-25: v2025.5.1.pre-release
- Repaired attribution on [](./univariate_distributions/beta.md)
- Updated credits for distributions chapters

## 2025-09-19: v2025.5.0.pre-release
Added [](./univariate_distributions/overview.md)

## 2025-09-15: v2025.4.1.pre-release
Replaced backwards with forward in two locations on page 2.6

## 2025-09-05: v2025.4.0.pre-release
- Added [](./numerical_methods/overview.md)
- Added [](./programming/week_1_2.md)

## 2025-09-03: v2025.3.0.pre-release
Added [](./propagation_uncertainty/uncertainty.md) to chapter 1

## 2025-08-29: v2025.2.1.pre-release
Added IDE explanation

## 2025-08-29: v2025.2.0.pre-release
Added [](./modelling/overview.md)

## 2025-08-29: v2025.1.0.pre-release
Added [](./programming/week_1_1.md)

## 2025-08-20: v2025.0.1.pre-release
Empty book published ready for next year

## 2025-07-20: v2024.1.0
The 2024 version of this book is available here: https://mude.citg.tudelft.nl/book/2024