Daily notes.

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Joshua Potter 2024-09-19 18:59:38 -06:00
parent 1e7eeb5604
commit 052b141e62
7 changed files with 43 additions and 6 deletions

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@ -808,8 +808,9 @@
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"Basic": [ "Basic": [

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---
title: "2024-09-19"
---
- [x] Anki Flashcards
- [x] KoL
- [x] OGS
- [ ] Sheet Music (10 min.)
- [ ] Korean (Read 1 Story)

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---
title: "2024-09-16"
---
- [x] Anki Flashcards
- [x] KoL
- [x] OGS
- [ ] Sheet Music (10 min.)
- [ ] Korean (Read 1 Story)

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---
title: "2024-09-17"
---
- [x] Anki Flashcards
- [x] KoL
- [x] OGS
- [ ] Sheet Music (10 min.)
- [ ] Korean (Read 1 Story)

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---
title: "2024-09-18"
---
- [x] Anki Flashcards
- [x] KoL
- [x] OGS
- [ ] Sheet Music (10 min.)
- [ ] Korean (Read 1 Story)

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@ -243,7 +243,7 @@ A **natural number** is a set that belongs to every inductive set.
%%ANKI %%ANKI
Basic Basic
How is a natural number *defined* in set theory? How is the set of natural numbers *defined* in set theory?
Back: As a set belonging to every inductive set. Back: As a set belonging to every inductive set.
Reference: Herbert B. Enderton, *Elements of Set Theory* (New York: Academic Press, 1977). Reference: Herbert B. Enderton, *Elements of Set Theory* (New York: Academic Press, 1977).
<!--ID: 1724486756997--> <!--ID: 1724486756997-->
@ -506,7 +506,7 @@ END%%
%%ANKI %%ANKI
Basic Basic
Which condition of Peano system $\langle N, S, e \rangle$ does the following depict? Which condition of Peano system $\langle N, S, e \rangle$ does the following violate?
![[peano-system-i.png]] ![[peano-system-i.png]]
Back: $e \not\in \mathop{\text{ran}}S$ Back: $e \not\in \mathop{\text{ran}}S$
Reference: Herbert B. Enderton, *Elements of Set Theory* (New York: Academic Press, 1977). Reference: Herbert B. Enderton, *Elements of Set Theory* (New York: Academic Press, 1977).
@ -523,7 +523,7 @@ END%%
%%ANKI %%ANKI
Basic Basic
Which condition of Peano system $\langle N, S, e \rangle$ does the following depict? Which condition of Peano system $\langle N, S, e \rangle$ does the following violate?
![[peano-system-ii.png]] ![[peano-system-ii.png]]
Back: $S$ is one-to-one. Back: $S$ is one-to-one.
Reference: Herbert B. Enderton, *Elements of Set Theory* (New York: Academic Press, 1977). Reference: Herbert B. Enderton, *Elements of Set Theory* (New York: Academic Press, 1977).