Add "front matter"-like header to theorem-proving-in-lean.

bookshelf/theorem-proving-in-lean/TheoremProvingInLean/Exercises2.lean

@@ -1,6 +1,7 @@
-/- Exercises 2
+/-
- -
+# References
- - Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
+
+1. Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
 -/
 
 -- Exercise 1

bookshelf/theorem-proving-in-lean/TheoremProvingInLean/Exercises3.lean

@@ -1,6 +1,7 @@
-/- Exercises 3
+/-
- -
+# References
- - Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
+
+1. Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
 -/
 
 -- Exercise 1

bookshelf/theorem-proving-in-lean/TheoremProvingInLean/Exercises4.lean

@@ -1,6 +1,7 @@
-/- Exercises 4
+/-
- -
+# References
- - Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
+
+1. Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
 -/
 
 -- Exercise 1

bookshelf/theorem-proving-in-lean/TheoremProvingInLean/Exercises5.lean

@@ -1,6 +1,7 @@
-/- Exercises 5
+/-
- -
+# References
- - Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
+
+1. Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
 -/
 
 -- Exercise 1

bookshelf/theorem-proving-in-lean/TheoremProvingInLean/Exercises7.lean

@@ -1,6 +1,7 @@
-/- Exercises 7
+/-
- -
+# References
- - Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
+
+1. Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
 -/
 
 -- Exercise 1

bookshelf/theorem-proving-in-lean/TheoremProvingInLean/Exercises8.lean

@@ -1,6 +1,7 @@
-/- Exercises 8
+/-
- -
+# References
- - Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
+
+1. Avigad, Jeremy. ‘Theorem Proving in Lean’, n.d.
 -/
 
 -- Exercise 1