diff --git a/.obsidian/plugins/obsidian-git/data.json b/.obsidian/plugins/obsidian-git/data.json
index e69de29..28c615c 100644
--- a/.obsidian/plugins/obsidian-git/data.json
+++ b/.obsidian/plugins/obsidian-git/data.json
@@ -0,0 +1,55 @@
+{
+  "commitMessage": "vault backup: {{date}}",
+  "commitDateFormat": "YYYY-MM-DD HH:mm:ss",
+  "autoSaveInterval": 10,
+  "autoPushInterval": 0,
+  "autoPullInterval": 0,
+  "autoPullOnBoot": false,
+  "disablePush": false,
+  "pullBeforePush": true,
+  "disablePopups": false,
+  "listChangedFilesInMessageBody": false,
+  "showStatusBar": true,
+  "updateSubmodules": false,
+  "syncMethod": "merge",
+  "customMessageOnAutoBackup": false,
+  "autoBackupAfterFileChange": false,
+  "treeStructure": false,
+  "refreshSourceControl": true,
+  "basePath": "",
+  "differentIntervalCommitAndPush": false,
+  "changedFilesInStatusBar": false,
+  "showedMobileNotice": true,
+  "refreshSourceControlTimer": 7000,
+  "showBranchStatusBar": true,
+  "setLastSaveToLastCommit": false,
+  "submoduleRecurseCheckout": false,
+  "gitDir": "",
+  "showFileMenu": true,
+  "lineAuthor": {
+    "show": false,
+    "followMovement": "inactive",
+    "authorDisplay": "initials",
+    "showCommitHash": false,
+    "dateTimeFormatOptions": "date",
+    "dateTimeFormatCustomString": "YYYY-MM-DD HH:mm",
+    "dateTimeTimezone": "viewer-local",
+    "coloringMaxAge": "1y",
+    "colorNew": {
+      "r": 255,
+      "g": 150,
+      "b": 150
+    },
+    "colorOld": {
+      "r": 120,
+      "g": 160,
+      "b": 255
+    },
+    "textColorCss": "var(--text-muted)",
+    "ignoreWhitespace": false,
+    "gutterSpacingFallbackLength": 5,
+    "lastShownAuthorDisplay": "initials",
+    "lastShownDateTimeFormatOptions": "date"
+  },
+  "autoCommitMessage": "vault backup: {{date}}"
+}
\ No newline at end of file
diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 5e08b30..194d838 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -7,32 +7,19 @@
         "id": "7ba4de56007748ed",
         "type": "tabs",
         "children": [
-          {
-            "id": "4d5a457a9ab7159d",
-            "type": "leaf",
-            "state": {
-              "type": "markdown",
-              "state": {
-                "file": "4a1s/RAS/PL - Aula 2.md",
-                "mode": "source",
-                "source": false
-              }
-            }
-          },
           {
             "id": "b7cf831723d71fb4",
             "type": "leaf",
             "state": {
               "type": "markdown",
               "state": {
-                "file": "4a1s/RAS/PL - Aula 2.md",
+                "file": "4a1s/CP/PL - Aula 3.md",
                 "mode": "source",
                 "source": false
               }
             }
           }
-        ],
-        "currentTab": 1
+        ]
       }
     ],
     "direction": "vertical"
@@ -99,7 +86,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "4a1s/RAS/PL - Aula 2.md",
+                "file": "4a1s/CP/PL - Aula 3.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -116,7 +103,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "4a1s/RAS/PL - Aula 2.md",
+                "file": "4a1s/CP/PL - Aula 3.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -139,7 +126,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "4a1s/RAS/PL - Aula 2.md"
+                "file": "4a1s/CP/PL - Aula 3.md"
               }
             }
           }
@@ -164,8 +151,10 @@
   },
   "active": "b7cf831723d71fb4",
   "lastOpenFiles": [
-    "Excalidraw/doodles.excalidraw.md",
     "4a1s/RAS/PL - Aula 2.md",
+    "4a1s/CP/PL - Aula 3.md",
+    "4a1s/CP/PL - Aula 2.md",
+    "Excalidraw/doodles.excalidraw.md",
     "4a1s/RAS/PL - Aula 1.md",
     "4a1s/RAS/T - Aula 2.md",
     "4a1s/RAS/T - Aula 1.md",
@@ -189,8 +178,6 @@
     "4a1s/Excalidraw/ASCN/Monolithic system.excalidraw.md",
     "4a1s/Excalidraw/ASCN/master.excalidraw.md",
     "4a1s/Excalidraw/ASCN/client-server.excalidraw.md",
-    "4a1s/Excalidraw/ASCN/bus.excalidraw.md",
-    "4a1s/DAA/T - Aula 2.md",
     "-.32118",
     "4a1s/ASCN/T",
     "4a1s/ASCN/T.32118",
diff --git a/4a1s/CP/PL - Aula 3.md b/4a1s/CP/PL - Aula 3.md
new file mode 100644
index 0000000..720111c
--- /dev/null
+++ b/4a1s/CP/PL - Aula 3.md	
@@ -0,0 +1,7 @@
+## Ex. 1
+### a)
+Spacial locality - proximity of memory spaces relative to our reference memory space (?)
+
+Logically following the multiplication process of matrices, C and A have spacial locality (while B does not, due to advancing in columns and not rows).
+### b)
+Every time it attempts to reach for matrix B, it will miss
\ No newline at end of file