end commit

README.md

@@ -1,3 +1,9 @@
+#### Important 2026-08-10
+
+This project is taking too much of my time. I could realistically learn Lean and formalize most of my class results, but that would take me too much of my free time. I will continue to learn lean. But it wouldn't be trying to recreate a worst mathlib.
+
+
+
 #### 2026-07-21
 
 Note : I don't probably realize the amount of work. Hence, I might stop this project at some point.

ZeroToLean/LearningLean/Basic.lean

@@ -317,15 +317,12 @@ theorem add_commutative_right (n m k: Nat)
     ring
 
 #check Nat.add_assoc
-#check Eq.symm
+theorem add_associativity_nat (n m k: Nat)
-#check Eq.trans
+  : n + m + k = n + (m + k) := by
-#check Nat.le_of_lt
+    ring
-#check Nat.le_trans
+
-#check Nat.add_le_add_right
-#check Nat.add_le_add_left
-#check Nat.add_left_cancel
-#check Nat.add_right_cancel
 #check Nat.mul_add
-#check Nat.mul_left_comm
+theorem mul_distribute_over_add_nat (n m k: Nat)
-#check Nat.mul_right_comm
+  : n * (m + k) = n * m + n * k := by
+    ring
 end basicArithmetic