diff --git a/src/data/roadmaps/machine-learning/content/linear-algebra@83UDoO1vC0LjL-qpI0Jh-.md b/src/data/roadmaps/machine-learning/content/linear-algebra@83UDoO1vC0LjL-qpI0Jh-.md
index a687b4787..fe40be8b5 100644
--- a/src/data/roadmaps/machine-learning/content/linear-algebra@83UDoO1vC0LjL-qpI0Jh-.md
+++ b/src/data/roadmaps/machine-learning/content/linear-algebra@83UDoO1vC0LjL-qpI0Jh-.md
@@ -4,6 +4,7 @@ Linear algebra is a branch of mathematics that deals with vector spaces and line
 
 Visit the following resources to learn more:
 
-- [@book@Linear algebra for data science](http://mitran-lab.amath.unc.edu/courses/MATH347DS/textbook.pdf)
 - [@article@How I learned Linear Algebra, Probability and Statistics for Data Science](https://towardsdatascience.com/how-i-learned-linear-algebra-probability-and-statistics-for-data-science-b9d1c34dfa56/)
-- [@video@Linear Algebra for Machine Learning](https://www.youtube.com/watch?v=QCPJ0VdpM00)
\ No newline at end of file
+- [@video@Linear Algebra for Machine Learning](https://www.youtube.com/watch?v=QCPJ0VdpM00)
+- [@book@Linear algebra for data science](http://mitran-lab.amath.unc.edu/courses/MATH347DS/textbook.pdf)
+- [@book@Linear Algebra Done Right](https://linear.axler.net/LADR4e.pdf)
\ No newline at end of file
diff --git a/src/data/roadmaps/machine-learning/content/numpy@nKE9sO-f2fdMiuLu2xby1.md b/src/data/roadmaps/machine-learning/content/numpy@nKE9sO-f2fdMiuLu2xby1.md
index f40ad9700..a0cd06710 100644
--- a/src/data/roadmaps/machine-learning/content/numpy@nKE9sO-f2fdMiuLu2xby1.md
+++ b/src/data/roadmaps/machine-learning/content/numpy@nKE9sO-f2fdMiuLu2xby1.md
@@ -7,4 +7,4 @@ Visit the following resources to learn more:
 - [@official@NumPy](https://numpy.org/)
 - [@opensource@NumPy](https://github.com/numpy/numpy)
 - [@article@Python NumPy Array Tutorial](https://www.datacamp.com/tutorial/python-numpy-tutorial)
-- [@video@Learn NumPy in 1 hour!](https://www.youtube.com/watch?v=VXU4LSAQDSc)
+- [@video@Learn NumPy in 1 hour!](https://www.youtube.com/watch?v=VXU4LSAQDSc)
\ No newline at end of file
diff --git a/src/data/roadmaps/machine-learning/content/object-oriented-programming@nN9BumBHi-c9HKFlgL2GH.md b/src/data/roadmaps/machine-learning/content/object-oriented-programming@nN9BumBHi-c9HKFlgL2GH.md
index e46a6a0a6..4f088bcde 100644
--- a/src/data/roadmaps/machine-learning/content/object-oriented-programming@nN9BumBHi-c9HKFlgL2GH.md
+++ b/src/data/roadmaps/machine-learning/content/object-oriented-programming@nN9BumBHi-c9HKFlgL2GH.md
@@ -7,4 +7,4 @@ Visit the following resources to learn more:
 - [@article@Object Oriented Programming in Python](https://realpython.com/python3-object-oriented-programming/)
 - [@video@Object Oriented Programming with Python - Full Course for Beginners](https://www.youtube.com/watch?v=Ej_02ICOIgs)
 - [@video@Object Oriented Programming (OOP) In Python - Beginner Crash Course](https://www.youtube.com/watch?v=-pEs-Bss8Wc/)
-- [@video@Python OOP Tutorial](https://www.youtube.com/watch?v=IbMDCwVm63M)
+- [@video@Python OOP Tutorial](https://www.youtube.com/watch?v=IbMDCwVm63M)
\ No newline at end of file
diff --git a/src/data/roadmaps/machine-learning/content/pandas@PnOoShqB3z4LuUvp0Gh2e.md b/src/data/roadmaps/machine-learning/content/pandas@PnOoShqB3z4LuUvp0Gh2e.md
index bb3965dc6..3c2fc7d6a 100644
--- a/src/data/roadmaps/machine-learning/content/pandas@PnOoShqB3z4LuUvp0Gh2e.md
+++ b/src/data/roadmaps/machine-learning/content/pandas@PnOoShqB3z4LuUvp0Gh2e.md
@@ -1,6 +1,8 @@
+# undefined
+
 Pandas is a library written for the Python programming language for data manipulation and analysis. In particular, it offers data structures and operations for manipulating numerical tables and time series.
 
 Visit the following resources to learn more:
+
 - [@official@pandas - Python Data Analysis Library](https://pandas.pydata.org/)
-- [@video@Complete Python Pandas Data Science Tutorial! (2025 Updated Edition)](https://www.youtube.com/watch?v=2uvysYbKdjM)
- 
+- [@video@Complete Python Pandas Data Science Tutorial! (2025 Updated Edition)](https://www.youtube.com/watch?v=2uvysYbKdjM)
\ No newline at end of file