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Yan Sheng's site
A math blog
Archive
Blog Posts (10)
15 May 2019 »
An Elementary Proof of Zsigmondy's Theorem
01 Apr 2019 »
My Final Year Project (I): Counting Geodesics
17 Mar 2019 »
Advice for Grad School
07 Mar 2019 »
The Dirichlet Hyperbola Method
09 Jan 2019 »
A Quick Note on Markov Chain Monte Carlo
29 Dec 2018 »
Some Ideas for Self-Improvement
06 Dec 2018 »
A Theory That Proves Its Own Inconsistency
23 Oct 2018 »
Vintage Computing
03 Oct 2018 »
Vieta's Formulas and $\zeta(2)$
16 Aug 2018 »
Calculating By Hand (I): $\ln2$
Notes (45)
25 Apr 2019 »
Algebraic Number Theory (VI): Dedekind Domains
24 Apr 2019 »
Algebraic Number Theory (V): Cyclotomic Fields
21 Mar 2019 »
Commutative Algebra (IX): The Induced Map on the Spectrum
08 Mar 2019 »
Commutative Algebra (VIII): Spectrum of a Ring
17 Feb 2019 »
Commutative Algebra (VII): Noetherian Rings
14 Feb 2019 »
Commutative Algebra (VI): Chain Conditions
10 Feb 2019 »
Algebraic Number Theory (IV): Number Rings
08 Feb 2019 »
Algebraic Number Theory (III): Algebraic Integers
29 Jan 2019 »
Commutative Algebra (V): Composition Series
29 Jan 2019 »
Commutative Algebra (IV): Finitely Presented Modules
28 Jan 2019 »
Commutative Algebra (III): Finite Modules
25 Jan 2019 »
Algebraic Number Theory (II): Number Fields
25 Jan 2019 »
Homological Algebra (II): Chain Complexes
24 Jan 2019 »
Homological Algebra (I): The Five Lemma and the Snake Lemma
22 Jan 2019 »
Commutative Algebra (II): Formal Power Series and Polynomials
21 Jan 2019 »
Algebraic Number Theory (I): First Examples
21 Jan 2019 »
A Refresher in Galois Theory
02 Jan 2019 »
Commutative Algebra (I): Radicals
31 Dec 2018 »
A Refresher in Commutative Rings
29 Dec 2018 »
Measure Theory (XVIII): The Lebesgue Differentiation Theorem
23 Nov 2018 »
Measure Theory (XVII): Functions of Bounded Variation
23 Nov 2018 »
Measure Theory (XVI): Vitali's Covering Theorem
23 Nov 2018 »
Measure Theory (XV): The Fourier Transform on $\bb R$
22 Nov 2018 »
Measure Theory (XIV): Approximate Identities
22 Nov 2018 »
Measure Theory (XIII): Convolution on $L^p(\bb R)$
20 Nov 2018 »
Measure Theory (XII): Product Measures
05 Nov 2018 »
Measure Theory (XI): $L^p$ Spaces
04 Nov 2018 »
Measure Theory (X): The Riemann-Lebesgue Theorem
24 Oct 2018 »
Measure Theory (IX): Littlewood's Three Principles
24 Oct 2018 »
Measure Theory (VIII): The Lebesgue Measure on $\bb R^n$
23 Oct 2018 »
Measure Theory (VII): The Carathéodory Construction of Measures
23 Oct 2018 »
Measure Theory (VI): Convergence Theorems
23 Oct 2018 »
Measure Theory (V): Lebesgue Integration (II)
20 Oct 2018 »
Measure Theory (IV): Lebesgue Integration (I)
15 Oct 2018 »
Measure Theory (III): Measurable Functions
18 Sep 2018 »
Several Complex Variables (VIII): Varieties in $\bb C^n$
13 Sep 2018 »
Several Complex Variables (VII): The Local Ring of Germs
12 Sep 2018 »
Measure Theory (II): Measures
11 Sep 2018 »
Measure Theory (I): $\sigma$-algebras
10 Sep 2018 »
Several Complex Variables (VI): Implicit Mapping Theorem
10 Sep 2018 »
Several Complex Variables (V): Local Behaviour
06 Sep 2018 »
Several Complex Variables (IV): Domains of Holomorphy
06 Sep 2018 »
Several Complex Variables (III): Hartogs's Phenomenon
04 Sep 2018 »
Several Complex Variables (II): Holomorphic functions
02 Sep 2018 »
Several Complex Variables (I): $z$ and $\overline z$