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math105-s22:s:selenali:start [2022/03/10 06:14] selenajli [Homework] |
math105-s22:s:selenali:start [2026/02/21 14:41] (current) |
| {{ :math105-s22:s:selenali:math105hw6.pdf |Homework 6}} | {{ :math105-s22:s:selenali:math105hw6.pdf |Homework 6}} |
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| {{ :math105-s22:s:selenali:math105hw7.pdf |Homework 7}} | {{ :math105-s22:s:selenali:math105hw7_2.pdf |Homework 7}} |
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| | {{ :math105-s22:s:selenali:math105hw8_2.pdf |Homework 8}} |
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| | {{ :math105-s22:s:selenali:math105hw9.pdf |Homework 9}} |
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| | {{ :math105-s22:s:selenali:math105hw10.pdf |Homework 10}} |
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| | {{ :math105-s22:s:selenali:math105hw11.pdf |Homework 11}} |
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| | {{ :math105-s22:s:selenali:math105hw12.pdf |Homework 12}} |
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| | ===== Final Essay ===== |
| | Here are some notes I wrote on probability measure spaces for my final essay. |
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| | {{ :math105-s22:s:selenali:Math105FinalEsaay.pdf |Probability Measure Spaces}} |
| ===== Other Notes/Thoughts ===== | ===== Other Notes/Thoughts ===== |
| ==== Uncountable Coverings ==== | ==== Uncountable Coverings ==== |
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| To prove this theorem, we use Fatou's Lemma on the sequences $F + f_n$ and $F - f_n$, both of which are non-negative from the condition. This allows us to lower bound $\int_{\Omega} f$ by the limsup of $\int_{\Omega} f_n$ and upper bound it by the liminf, which shows the desired result. | To prove this theorem, we use Fatou's Lemma on the sequences $F + f_n$ and $F - f_n$, both of which are non-negative from the condition. This allows us to lower bound $\int_{\Omega} f$ by the limsup of $\int_{\Omega} f_n$ and upper bound it by the liminf, which shows the desired result. |
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| | ==== Littlewood's Three Principles ==== |
| | Littlewood's Three Principles summarize three main ideas in real analysis. The first principle says that every measurable set can be written as the union of finitely many intervals, up to a set of measure $\epsilon$. The second principle says that every measurable function is continuous on it's domain minus a set of measure $\epsilon$. The third principle says that a pointwise convergent sequence of measurable functions converges uniformly up to an $\epsilon$-set. |
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| | These three principles share a common theme that removing an arbitrarily small set can lead to nice properties, or that measurable functions/sets "nearly" have these properties. |