Move lambda calculus notes.

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notes/_journal/2024-05-24.md

@@ -0,0 +1,9 @@
+---
+title: "2024-05-24"
+---
+
+- [ ] Anki Flashcards
+- [x] KoL
+- [ ] Sheet Music (10 min.)
+- [ ] Go (1 Life & Death Problem)
+- [ ] Korean (Read 1 Story)

notes/_journal/2024-05/2024-05-23.md

@@ -9,4 +9,5 @@ title: "2024-05-23"
 - [ ] Korean (Read 1 Story)
 
 * Watched [Lecture #10 - Sorting & Aggregation Algorithms](https://www.youtube.com/watch?v=CMzf9Az1vl4) on databases.
-* Work through chapter 1 of "Lambda-Calculus and Combinators, an Introduction".
+* Work through chapter 1 of "Lambda-Calculus and Combinators, an Introduction".
+* Briefly played around further with different Flutter constructs.

notes/programming/lambda-calculus.md

@@ -189,6 +189,44 @@ Reference: Hindley, J Roger, and Jonathan P Seldin. “Lambda-Calculus and Combi
 <!--ID: 1716494526352-->
 END%%
 
+%%ANKI
+Basic
+How is a constant function returning $y$ denoted in $\lambda$-calculus?
+Back: $\lambda x. y$
+Reference: Hindley, J Roger, and Jonathan P Seldin. “Lambda-Calculus and Combinators, an Introduction,” n.d. [https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf](https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf).
+<!--ID: 1716498992500-->
+END%%
+
+%%ANKI
+Basic
+How is expression $MNPQ$ written with parentheses reintroduced?
+Back: $(((MN)P)Q)$
+Reference: Hindley, J Roger, and Jonathan P Seldin. “Lambda-Calculus and Combinators, an Introduction,” n.d. [https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf](https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf).
+<!--ID: 1716498992520-->
+END%%
+
+%%ANKI
+Cloze
+By convention, parentheses in $\lambda$-calculus are {left}-associative.
+Reference: Hindley, J Roger, and Jonathan P Seldin. “Lambda-Calculus and Combinators, an Introduction,” n.d. [https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf](https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf).
+<!--ID: 1716498992525-->
+END%%
+
+%%ANKI
+Basic
+How is expression $\lambda x. \lambda y. MN$ written with parentheses reintroduced?
+Back: $(\lambda x. (\lambda y. (MN)))$
+Reference: Hindley, J Roger, and Jonathan P Seldin. “Lambda-Calculus and Combinators, an Introduction,” n.d. [https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf](https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf).
+<!--ID: 1716498992530-->
+END%%
+
+%%ANKI
+Cloze
+Expression $(MN)$ is interpreted as applying {$M$} to {$N$}.
+Reference: Hindley, J Roger, and Jonathan P Seldin. “Lambda-Calculus and Combinators, an Introduction,” n.d. [https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf](https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf).
+<!--ID: 1716498992534-->
+END%%
+
 ## Bibliography
 
 * Hindley, J Roger, and Jonathan P Seldin. “Lambda-Calculus and Combinators, an Introduction,” n.d. [https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf](https://www.cin.ufpe.br/~djo/files/Lambda-Calculus%20and%20Combinators.pdf).