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chore: reorganize all image files and linted documents (#80)
* [PUBLISHER] upload files #62 * [PUBLISHER] upload files #63 * [PUBLISHER] upload files #64 * [PUBLISHER] upload files #65 * [PUBLISHER] upload files #66 * [PUBLISHER] upload files #67 * PUSH NOTE : test-document.md * PUSH NOTE : 09. Lp Functions.md * PUSH ATTACHMENT : mt-09.png * PUSH NOTE : 03. Measure Spaces.md * PUSH ATTACHMENT : mt-03.png * PUSH NOTE : 08. Comparison with the Riemann Integral.md * PUSH ATTACHMENT : mt-08.png * PUSH NOTE : 07. Dominated Convergence Theorem.md * PUSH ATTACHMENT : mt-07.png * PUSH NOTE : 06. Convergence Theorems.md * PUSH ATTACHMENT : mt-06.png * PUSH NOTE : 05. Lebesgue Integration.md * PUSH ATTACHMENT : mt-05.png * PUSH NOTE : test-document.md * [PUBLISHER] upload files #68 * [PUBLISHER] upload files #69 * PUSH NOTE : 08. Comparison with the Riemann Integral.md * PUSH ATTACHMENT : mt-08.png * PUSH NOTE : 02. Construction of Measure.md * PUSH ATTACHMENT : mt-02.png * DELETE FILE : _posts/2023-09-09-test-document.md * DELETE FILE : _posts/Mathematics/Measure Theory/2023-09-09-test-document.md * [PUBLISHER] upload files #70 * PUSH NOTE : Rules of Inference with Coq.md * PUSH NOTE : 수학 공부에 대한 고찰.md * PUSH NOTE : 04. Measurable Functions.md * PUSH ATTACHMENT : mt-04.png * PUSH NOTE : 07. Dominated Convergence Theorem.md * PUSH ATTACHMENT : mt-07.png * PUSH NOTE : 08. Comparison with the Riemann Integral.md * PUSH ATTACHMENT : mt-08.png * PUSH NOTE : 05. Lebesgue Integration.md * PUSH ATTACHMENT : mt-05.png * PUSH NOTE : 03. Measure Spaces.md * PUSH ATTACHMENT : mt-03.png * PUSH NOTE : 09. Lp Functions.md * PUSH ATTACHMENT : mt-09.png * PUSH NOTE : 06. Convergence Theorems.md * PUSH ATTACHMENT : mt-06.png * PUSH NOTE : 02. Construction of Measure.md * PUSH ATTACHMENT : mt-02.png * PUSH NOTE : 01. Algebra of Sets and Set Functions.md * PUSH ATTACHMENT : mt-01.png * PUSH NOTE : 블로그 이주 이야기.md * PUSH ATTACHMENT : blog-logo.png * PUSH ATTACHMENT : github-publisher.png * PUSH NOTE : 05. Services - Enabling Clients to Discover and Talk to Pods.md * PUSH ATTACHMENT : k8s-05.jpeg * PUSH NOTE : 18. Extending Kubernetes.md * PUSH ATTACHMENT : k8s-18.jpeg * PUSH NOTE : 11. Understanding Kubernetes Internals.md * PUSH ATTACHMENT : k8s-11.jpeg * PUSH NOTE : 04. Replication and Other Controllers - Deploying Managed Pods.md * PUSH ATTACHMENT : k8s-04.jpeg * PUSH NOTE : 10. StatefulSets - Deploying Replicated Stateful Applications.md * PUSH ATTACHMENT : k8s-10.jpeg * PUSH NOTE : 02. First Steps with Docker and Kubernetes.md * PUSH ATTACHMENT : k8s-02.jpeg * PUSH NOTE : 06. Volumes - Attaching Disk Storage to Containers.md * PUSH ATTACHMENT : k8s-06.jpeg * PUSH NOTE : 12. Securing the Kubernetes API Server.md * PUSH ATTACHMENT : k8s-12.jpeg * PUSH NOTE : 07. ConfigMaps and Secrets - Configuring Applications.md * PUSH ATTACHMENT : k8s-07.jpeg * PUSH NOTE : 13. Securing Cluster Nodes and the Network.md * PUSH ATTACHMENT : k8s-13.jpeg * PUSH NOTE : 09. Deployments - Updating Applications Declaratively.md * PUSH ATTACHMENT : k8s-09.jpeg * PUSH NOTE : 17. Best Practices for Developing Apps.md * PUSH ATTACHMENT : k8s-17.jpeg * PUSH NOTE : 16. Advanced Scheduling.md * PUSH ATTACHMENT : k8s-16.jpeg * PUSH NOTE : 08. Accessing Pod Metadata and Other Resources from Applications.md * PUSH ATTACHMENT : k8s-08.jpeg * PUSH NOTE : 15. Automatic Scaling of Pods and Cluster Nodes.md * PUSH ATTACHMENT : k8s-15.jpeg * PUSH NOTE : 01. Introducing Kubernetes.md * PUSH ATTACHMENT : k8s-01.jpeg * PUSH NOTE : 03. Pods - Running Containers in Kubernetes.md * PUSH ATTACHMENT : k8s-03.jpeg * PUSH NOTE : 14. Managing Pods' Computational Resources.md * PUSH ATTACHMENT : k8s-14.jpeg * [PUBLISHER] upload files #71 * PUSH NOTE : test-document.md * PUSH NOTE : test-document.md * PUSH ATTACHMENT : test-image.png * DELETE FILE : assets/img/posts/test/test-image.png * [PUBLISHER] upload files #72 * PUSH NOTE : test-document.md * PUSH ATTACHMENT : test-image.png * DELETE FILE : assets/img/posts/test/test-image.png * [PUBLISHER] upload files #73 * PUSH NOTE : test-document.md * PUSH ATTACHMENT : test-image.png * chore: remove test files * [PUBLISHER] upload files #74 * PUSH NOTE : 01. Algebra of Sets and Set Functions.md * PUSH ATTACHMENT : mt-01.png * DELETE FILE : assets/img/posts/Mathematics/Measure Theory/mt-01.png * [PUBLISHER] upload files #76 * PUSH NOTE : 01. Algebra of Sets and Set Functions.md * PUSH ATTACHMENT : mt-01.png * [PUBLISHER] upload files #77 * PUSH NOTE : 09. Lp Functions.md * PUSH ATTACHMENT : mt-09.png * PUSH NOTE : 08. Comparison with the Riemann Integral.md * PUSH ATTACHMENT : mt-08.png * PUSH NOTE : 07. Dominated Convergence Theorem.md * PUSH ATTACHMENT : mt-07.png * PUSH NOTE : 06. Convergence Theorems.md * PUSH ATTACHMENT : mt-06.png * PUSH NOTE : 05. Lebesgue Integration.md * PUSH ATTACHMENT : mt-05.png * PUSH NOTE : 04. Measurable Functions.md * PUSH ATTACHMENT : mt-04.png * PUSH NOTE : 03. Measure Spaces.md * PUSH ATTACHMENT : mt-03.png * PUSH NOTE : 01. Algebra of Sets and Set Functions.md * PUSH ATTACHMENT : mt-01.png * chore: remove images * [PUBLISHER] upload files #78 * PUSH NOTE : 09. Lp Functions.md * PUSH ATTACHMENT : mt-09.png * PUSH NOTE : 08. Comparison with the Riemann Integral.md * PUSH ATTACHMENT : mt-08.png * PUSH NOTE : 07. Dominated Convergence Theorem.md * PUSH ATTACHMENT : mt-07.png * PUSH NOTE : 06. Convergence Theorems.md * PUSH ATTACHMENT : mt-06.png * PUSH NOTE : 05. Lebesgue Integration.md * PUSH ATTACHMENT : mt-05.png * PUSH NOTE : 04. Measurable Functions.md * PUSH ATTACHMENT : mt-04.png * PUSH NOTE : 03. Measure Spaces.md * PUSH ATTACHMENT : mt-03.png * PUSH NOTE : 01. Algebra of Sets and Set Functions.md * PUSH ATTACHMENT : mt-01.png * PUSH NOTE : 18. Extending Kubernetes.md * PUSH ATTACHMENT : k8s-18.jpeg * PUSH NOTE : 17. Best Practices for Developing Apps.md * PUSH ATTACHMENT : k8s-17.jpeg * PUSH NOTE : 16. Advanced Scheduling.md * PUSH ATTACHMENT : k8s-16.jpeg * PUSH NOTE : 15. Automatic Scaling of Pods and Cluster Nodes.md * PUSH ATTACHMENT : k8s-15.jpeg * PUSH NOTE : 14. Managing Pods' Computational Resources.md * PUSH ATTACHMENT : k8s-14.jpeg * PUSH NOTE : 13. Securing Cluster Nodes and the Network.md * PUSH ATTACHMENT : k8s-13.jpeg * PUSH NOTE : 12. Securing the Kubernetes API Server.md * PUSH ATTACHMENT : k8s-12.jpeg * PUSH NOTE : 11. Understanding Kubernetes Internals.md * PUSH ATTACHMENT : k8s-11.jpeg * PUSH NOTE : 10. 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Introducing Kubernetes.md * PUSH ATTACHMENT : k8s-01.jpeg * [PUBLISHER] upload files #79 * PUSH NOTE : 02. Construction of Measure.md * PUSH ATTACHMENT : mt-02.png
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@@ -8,10 +8,12 @@ title: "02. Construction of Measure"
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date: "2023-01-23"
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github_title: "2023-01-23-construction-of-measure"
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image:
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path: /assets/img/posts/mt-02.png
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path: /assets/img/posts/Mathematics/Measure Theory/mt-02.png
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attachment:
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folder: assets/img/posts/Mathematics/Measure Theory
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---
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이제 본격적으로 집합을 재보도록 하겠습니다. 우리가 잴 수 있는 집합들부터 시작합니다. $\mathbb{R}^p$에서 논의할 건데, 이제 여기서부터는 $\mathbb{R}$의 구간의 열림/닫힘을 모두 포괄하여 정의합니다. 즉, $\mathbb{R}$의 구간이라고 하면 $[a, b], (a, b), [a, b), (a, b]$ 네 가지 경우를 모두 포함합니다.
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@@ -199,7 +201,7 @@ $$\mu^\ast(A) + \mu^\ast(B) = \mu^\ast(A\cup B) + \mu^\ast(A \cap B)$$
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와 같이 정의하면 $A_n$이 쌍마다 서로소이고 $A_n \in \mathfrak{M} _ F(\mu)$ 임을 알 수 있다.
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위 사실을 이용하여 $A_n \in \mathfrak{M} _ F(\mu)$ 에 대하여 $A = \displaystyle\bigcup_ {n=1}^\infty A_n$ 으로 두자.
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위 사실을 이용하여 $A_n \in \mathfrak{M} _ F(\mu)$ 에 대하여 $A = \displaystyle\bigcup_ {n=1}^\infty A_n$ 으로 두자.
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1. Countable subadditivity에 의해 $\displaystyle\mu^\ast(A) \leq \sum_ {n=1}^{\infty} \mu^\ast (A_n)$ 가 성립한다.
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@@ -254,9 +256,6 @@ $$A_n \cap B = \bigcup_ {k=1}^\infty (A_n \cap B_k) \in \mathfrak{M}(\mu)$$
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이제 $\Sigma$ 위의 $\mu$ 정의를 $\mathfrak{M}(\mu)$ ($\sigma$-algebra)로 확장하여 $\mathfrak{M}(\mu)$ 위에서는 $\mu = \mu^\ast$ 로 정의합니다. $\Sigma$ 위에서 $\mu = m$ 일 때, 이와 같이 확장한 $\mathfrak{M}(m)$ 위의 $m$을 **Lebesgue measure** on $\mathbb{R}^p$라 합니다. 그리고 $A \in \mathfrak{M}(m)$ 를 Lebesgue measurable set이라 합니다.
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[^1]: $A$가 open이 아니면 자명하지 않은 명제입니다.
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[^2]: $A$가 $\mu$-measurable인데 $\mu^\ast(A) < \infty$이면 $A$는 finitely $\mu$-measurable이다.
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[^3]: $A$가 countable union of sets in $\mathfrak{M} _ F(\mu)$이므로 $\mu^\ast$도 각 set의 $\mu^\ast$의 합이 된다.
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[^4]: 아직 증명이 끝나지 않았습니다. $A_n$은 $\mathfrak{M}(\mu)$의 원소가 아니라 $\mathfrak{M} _ F(\mu)$의 원소입니다.
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