diff --git a/probability-statistics-random-processes/notes.md b/probability-statistics-random-processes/notes.md
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@@ -1,3 +0,0 @@
-# Notes for Introduction to Probability, Statistics, and Random Processes
-
-## Ch.1
diff --git a/probability-statistics-random-processes/.ipynb_checkpoints/ch1-checkpoint.ipynb b/study/introduction-to-probability-statistics-and-random-processes/.ipynb_checkpoints/ch1-checkpoint.ipynb
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--- a/probability-statistics-random-processes/.ipynb_checkpoints/ch1-checkpoint.ipynb
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  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "roadmap (3.14.5)",
    "language": "python",
    "name": "python3"
   },
diff --git a/probability-statistics-random-processes/.ipynb_checkpoints/notes-checkpoint.md b/study/introduction-to-probability-statistics-and-random-processes/.ipynb_checkpoints/notes-checkpoint.md
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diff --git a/textbooks/Introduction to Probability, Statistics, and Random Processes - Hossein Pishro-Nik.pdf b/study/introduction-to-probability-statistics-and-random-processes/textbooks/Introduction to Probability, Statistics, and Random Processes - Hossein Pishro-Nik.pdf
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diff --git a/textbooks/Introduction to Probability, Statistics, and Random Processes - Hossein Pishro-Nik_SOLUTIONS.pdf b/study/introduction-to-probability-statistics-and-random-processes/textbooks/Introduction to Probability, Statistics, and Random Processes - Hossein Pishro-Nik_SOLUTIONS.pdf
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