diff --git a/201 Metadata/My Library.bib b/201 Metadata/My Library.bib
index 5366f90af..01c254e0d 100644
--- a/201 Metadata/My Library.bib	
+++ b/201 Metadata/My Library.bib	
@@ -710,7 +710,7 @@ Opportunities and Challenges toward Responsible AI.pdf}
   date = {2003-01-01},
   journaltitle = {Progress in Nuclear Energy},
   volume = {43},
-  number = {1-4},
+  number = {1--4},
   pages = {151--158},
   issn = {01491970},
   doi = {10.1016/s0149-1970(03)00023-4},
@@ -845,7 +845,7 @@ Opportunities and Challenges toward Responsible AI.pdf}
 }
 
 @article{avigadFORMALSYSTEMEUCLID2009,
-  title = {A {{FORMAL SYSTEM FOR EUCLID}}’{{S}} {{{\emph{ELEMENTS}}}}},
+  title = {A {{FORMAL SYSTEM FOR EUCLID}}’{{S}} {{{\mkbibemph{ELEMENTS}}}}},
   author = {Avigad, Jeremy and Dean, Edward and Mumma, John},
   date = {2009-12},
   journaltitle = {The Review of Symbolic Logic},
@@ -2100,6 +2100,13 @@ Opportunities and Challenges toward Responsible AI.pdf}
   url = {https://cfe.pitt.edu}
 }
 
+@online{CH2_Sampled_Data_Analysis_Unfilledpptx2254ME,
+  title = {{{CH2}}\_{{Sampled}}\_{{Data}}\_{{Analysis}}\_{{Unfilled}}.Pptx: 2254 {{ME}} 2046 {{SEC1000 DIGITAL CONTROL SYSTEMS}}},
+  url = {https://canvas.pitt.edu/courses/301794/files/19365215?module_item_id=5478186},
+  urldate = {2025-01-09},
+  file = {/home/danesabo/Zotero/storage/CDGP72KV/CH2_Sampled_Data_Analysis_Unfilled(1).pptx}
+}
+
 @incollection{championKindModelChecker2016,
   title = {The {{Kind}} 2 {{Model Checker}}},
   booktitle = {Computer {{Aided Verification}}},
@@ -2152,6 +2159,13 @@ Opportunities and Challenges toward Responsible AI.pdf}
   file = {/home/danesabo/Zotero/storage/72C8YKGT/Chappellat et al. - 1990 - Elementary proofs of some classical stability crit.pdf;/home/danesabo/Zotero/storage/YLLB6JD5/57067.html}
 }
 
+@article{Chapter3ZTransform,
+  title = {Chapter 3 {{The}} Z-{{Transform}} and the {{Difference Equation}}},
+  journaltitle = {DIGITAL CONTROL SYSTEMS},
+  langid = {english},
+  file = {/home/danesabo/Zotero/storage/YVUXYFW8/Chapter 3 The z-Transform and the Difference Equation.pdf}
+}
+
 @online{charalambousNewEraSoftware2023,
   title = {A {{New Era}} in {{Software Security}}: {{Towards Self-Healing Software}} via {{Large Language Models}} and {{Formal Verification}}},
   shorttitle = {A {{New Era}} in {{Software Security}}},
@@ -7833,6 +7847,31 @@ for defect classification of TFT–LCD panels.pdf}
   file = {/home/danesabo/Zotero/storage/XRHNBS62/McLaughlin and Zonouz - 2014 - Controller-aware false data injection against prog.pdf;/home/danesabo/Zotero/storage/Q2LEVUCB/7007754.html}
 }
 
+@online{ME2046_Introduction_Reading_Chapter_1pdf2254ME,
+  title = {{{ME2046}}\_{{Introduction}}\_{{Reading}}\_{{Chapter}}\_1.Pdf: 2254 {{ME}} 2046 {{SEC1000 DIGITAL CONTROL SYSTEMS}}},
+  url = {https://canvas.pitt.edu/courses/301794/files/19363968?module_item_id=5477526},
+  urldate = {2025-01-09},
+  file = {/home/danesabo/Zotero/storage/HCGVIXG6/ME2046_Introduction_Reading_Chapter_1.pdf 2254 ME 2046 SEC1000 DIGITAL CONTROL SYSTEMS.pdf;/home/danesabo/Zotero/storage/BKIG2CBT/19363968.html}
+}
+
+@online{ME2046_Sampled_Data_Analysis_Reading_Chapter_2pdf2254ME,
+  title = {{{ME2046}}\_{{Sampled}}\_{{Data}}\_{{Analysis}}\_{{Reading}}\_{{Chapter}}\_2.Pdf: 2254 {{ME}} 2046 {{SEC1000 DIGITAL CONTROL SYSTEMS}}},
+  url = {https://canvas.pitt.edu/courses/301794/files/19363969?module_item_id=5477527},
+  urldate = {2025-01-09}
+}
+
+@online{ME2046_The_z_transform_Chapter_3pdf2254ME,
+  title = {{{ME2046}}\_{{The}}\_z\_transform\_{{Chapter}}\_3.Pdf: 2254 {{ME}} 2046 {{SEC1000 DIGITAL CONTROL SYSTEMS}}},
+  url = {https://canvas.pitt.edu/courses/301794/files/19363970?module_item_id=5477528},
+  urldate = {2025-01-09}
+}
+
+@online{ME2046_The_z_transform_Chapter_3pdf2254MEb,
+  title = {{{ME2046}}\_{{The}}\_z\_transform\_{{Chapter}}\_3.Pdf: 2254 {{ME}} 2046 {{SEC1000 DIGITAL CONTROL SYSTEMS}}},
+  url = {https://canvas.pitt.edu/courses/301794/files/19363970?module_item_id=5477528},
+  urldate = {2025-01-09}
+}
+
 @thesis{medeirosFaultIntrusionTolerant2011,
   type = {mathesis},
   title = {A Fault - and Intrusion - Tolerant Architecture for {{EDP Distribuição SCADA}} System},
@@ -9251,7 +9290,7 @@ Insights from the Social Sciences.pdf}
   journaltitle = {Reliability Engineering \& System Safety},
   shortjournal = {Reliability Engineering \& System Safety},
   volume = {91},
-  number = {10-11},
+  number = {10--11},
   pages = {1290--1300},
   issn = {09518320},
   doi = {10.1016/j.ress.2005.11.025},
@@ -12505,7 +12544,7 @@ Subject\_term: Careers, Politics, Policy},
   date = {1995},
   journaltitle = {Progress in Nuclear Energy},
   volume = {29},
-  number = {3-4},
+  number = {3--4},
   pages = {347--356},
   issn = {01491970},
   doi = {10.1016/0149-1970(95)00017-e},
diff --git a/2025-01-09 Sampling Theory.md b/2025-01-09 Sampling Theory.md
new file mode 100644
index 000000000..e69de29bb