# All notes on this site are now centralized and public

Hi all, thanks for your patience. I got a few messages after fixing my personal google drive’s sharing permissions, and realized that in that process I had broken some links. This issue lasted a couple of weeks and is fixed.

In the mean time I also found my geometry and statistic notes and posted about them.

All of the notes that I have will now be hosted directly in a google drive with an account dedicated specifically to just this project, so for as long as Google Drive exists, these embed links should remain stable.

The entire folder is now open for access, for people who wish to mass download my notes (seems to happen once in a while).

Real question: Should I share years of homework and midterms as examples? Would students find that useful?

# LaTeX Public Templates

LaTeX templates are great for creating exact formatting for documents. These were all written by me, and collected here as a resource, to use or to build your own templates. I sincerely hope they are helpful to students as well as recent graduates looking for work.

# Principal Ideal Domains non-example

A good practice in math, especially when studying a type of mathematical objects, is by considering what doesn’t fit the definition.

# Getting started with LaTeX

There are many benefits to using LaTeX as an academic. This post aims to giving you resources on how to setup your coding environment. The aim is not a comprehensive review of LaTeX editors, but to give a starting point for novices, so apologies if your favorite editor is not included here.

## Choosing a Starting Point: Online vs. Offline

There are many ways to setup your environment, and here I’ll layout the two major ways – desktop and cloud. and their pros and cons:

Based on what you’re building, you’d likely switch between cloud and desktop environments. Thus, I’ll recommend some specific ones below.

Choice as of November 2019: Offline editor I recommend TeXmaker. For online editor Overleaf, especially if I’m working on tiny projects like homework assignments and I’m not on my own computer.

### Notable Online LaTeX Editors: Overleaf, Authorea and CoCalc

• Overleaf v2: Great document editor site, one of the most popular. Overleaf hosts many templates as well as gives fairly comprehensive customer support. Result of the merger of Overleaf and ShareLaTeX, the site unfortunately is freemium. This popular website is used at the University of Illinois of Chicago, in the department of mathematics to handle creation of exams and exam keys. Also used extensively by my cohort at San Francisco State University for homework. Highly recommended to use their free solo accounts for learning LaTeX.
• Authorea: “a platform to read, write, and publish research.” Mainly a good platform for collaboration between researchers who already know latex and those who are using other text editors. Main plus: they use Git for version control, which makes this very attractive for bigger teams working on long projects. They also have a stated goal of helping bring the power of professional typesetting using LaTeX to social sciences.
• CoCalc: This is a great site for mathematicians and statisticians who enjoy open source programming philosophy. Aside from a full LaTeX compiler, they also handle SageMath worksheets, Jupyter notebooks, R and scientific Python. From my personal experience, this is a great place for learning all these formats. before beginning my master’s thesis, I wrote prototypical code here until dealing with lattice polytopes in dimensions higher than 3 made the server eventually hate me.
• Codecogs: Basic editor for creating images of mathematical equations, useful for super quick creation, no more, no less.

### Notable Offline LaTeX Editors

First, depending on your operating system, you should install a LaTeX compiler:

Then, choose a LaTeX editor. I’ve only included dependable editors that are usable across Windows, Mac as well as Linux, as that is important to me personally because I switch between Ubuntu and Windows depending on the task often.

• TeXmaker: Install this and start coding! Texmaker is considered to be one of the best LaTeX editors for GNOME desktop environment. It presents a great user interface which results in a good user experience. It is also crowned to be one among the most useful LaTeX editor there is.
• TeXstudio: A fork of TeXmaker, with more open philosophy to modification. This program allows for more customizability than TeXmaker. The learning curve is slightly higher, due to having more features.

#### Other notable editors (harder to use, but with great potential for power-users)

• Sublime Text: Great tool if you’re using already familiar with sublime text as an editor for Python and other languages. Simply add on LaTeX plugin and set up autocomplete and snippets and you’re good to go. See: LaTeX Tools
• Visual Studio Code: Similar remark to above. See: LaTeX Workshop.
• VIM: Learning this editor is HARD, but the payoffs are great if you plan on being a high-functioning code producer one day. This is likely the most powerful editor on this list, and it’s my personal goal to integrate this editor into my workflow one day. (There’s an ongoing editor war, which I hope that my joke here won’t bring too much vitriol…) This editor exist in almost all Unix/Linux distributions by default, and is highly customizable, with a significantly different flow of editing from others. Power of snippets is super intense, and while the learning curve is sharp, the potential to generate massive amount of work with minimal keystrokes cannot be underestimated. Set up snippets, autocomplete and use a latex plugin and you’re golden. (This last sentence is a non-trivial amount of work.) See the following resources: vimtex, ultisnips, and vim-snippets. For a demonstration of the power of combining vim and latex see the following blog entries by Gilles Castel: 1, 2 and 3.
• LyX: a WYSIWYM document editor, this program attempts to bridge the plaintext source code style of LaTeX and the WYSIWYG editors. In my humble opinion, this is not really a good place to start if you wish to do more than just math homework documents. In practice, using this program eventually hinders you from using the full power of LaTeX beyond the basic equation editing.

For a more comprehensive breakdown of editors, visit this wikipedia page.

Next in the series we will cover the basic structure of a latex document, and common resources to help you as you build your code.

# Introduction to LaTeX

LaTeX is a powerful document preparation system. This system is free and is available across many operating systems, such as Windows, Mac OS and most distributions of Linux. A successor of TeX, LaTeX was created in the 1983 by Leslie Lamport. This computer typesetting software was originally created for academic papers in STEM fields, and since has grown in popularity in other fields because of its power to create many types of paper and digital documents common in academic fields. For those who are aiming to write a long text such as a dissertation, thesis or a book, a major attraction to learning LaTeX is its ability to handle large papers and provide uniform, beautiful, and professional formatting. LaTeX handles all the mundane tasks of formatting, so you can focus on writing the content!

## Why use LaTeX

For some samples of what you can create with LaTeX, visit the Notes and Work section of this blog. Below are some reasons why you might be interested in using LaTeX:

• Manage large documents by using include directives, which allows for reuse or quick modification of content as well as manage large documents.
• The technique of using multiple files to represent one documents also allows for the flexibility to quickly create of many versions of an assessment.
• Automate citations, bibliographies and formatting of bibliographies. (Quickly switching from numeric style to APA when you transition from math to social sciences, for example)
• Natural to integrate into workflow if you use popular reference management software such as Zotero, Mandeley, Citavi and most others. (Check here to see if your reference manager is compatible with Bibtex.)
• Automate the creation of list of figures/tables/graphs, and the associated numbering
• Automate the creation, sorting and creation of index, acronym and glossary lists
• Typeset complex mathematical formulae, chemical equations
• Create more complicated documents like posters, slides, and double-sided flash cards
• Precise typesetting for many languages, this is especially useful for languages outside of the romantic languages family such as Arabic

## Comparing LaTeX with word-processors

There are some contrasts with WYSIWYG (What You See is What You Get) word processors like Microsoft Word or Open Office.

There are some advantages of using WYSIWYG processors:

• you wish to take advantage of the templates provided by MS Word, such as Resumes or business cards (You can create this in LaTeX also, especially if you choose Overleaf)
• if you’re creating documents that have specific syntax, such as markup language for github readmes,
• and if you’re creating very short files where formatting doesn’t matter (such as notes not meant for publication).

When common word processors attempt to handle large files, any major modifications to the file can break the table of contents, and automatic numbering of the tables/figures/lists are not reliable. Furthermore, for students working in multiple operating systems, transitioning between different operating systems using the same latex code will generate the exact same document – this precision is simply not guaranteed with most WYSIWYG processors.

With the above in mind, if you’re interested in learning about LaTeX as a beginner, I’ll be giving an introductory workshop at LSRI on November 13th, 2019.

Coming soon:

Disclaimer: Featured image source https://en.wikibooks.org/wiki/LaTeX

# Updates on GitHub

Finally set up a github to house all the custom LaTeX files that I’ve created!

Will be updating this over time – this particular github is mostly meant for personal use, though I’m happy to share what I have and continue to update this github.

As I continue to create new tools, I’ll be hosting them here.

You’ll see currently the following repositories:

# Calculus I Review: Curve Sketching

Curve sketching is an important application of derivatives. Here’s an example with a polynomial, with pictures to help assist understanding:

# Notes: Real Analysis I, II and Graduate Analysis

I took Real Analysis I & II with Professor Alex Schuster in 2016-2017. These comprehensive notes were compiled using lecture notes and the textbook, An Introduction to Analysis (Fourth Edition), by William Wade.

Disclaimer: my notes are meant to be a toolbox while doing proofs and studying/practicing the course in general. There may contain typos or mistakes. Please feel free to let me know if you find any errors!

# Notes: Graduate Algebra

I took Graduate Algebra with Professor Matthias Beck in Spring 2017. These comprehensive notes were compiled using lecture notes and the textbook, David S. Dummit & Richard M. Foote, Abstract Algebra (3rd edition), Wiley 2004. [errata]

Disclaimer: my notes are meant to be a toolbox while doing proofs and studying/practicing the course in general. There may contain typos or mistakes. Please feel free to let me know if you find any errors!

Topics Covered:

• Polynomial rings,
• irreducibility criteria,
• Gröbner bases & Buchberger’s algorithm,
• field extensions,
• splitting fields,
• Galois groups,
• fundamental theorem of Galois theory,
• applications of Galois extensions,
• introduction to the polynomial method with applications in graph theory and incidence geometry.

# Precalculus Resources: Spring 2017 Midterm II Review

I have gathered quizzes that relate directly to the upcoming midterm, as well as included a sample midterm. Please feel free to use these for practice! If you have trouble with the material, visit this page for additional resources. Don’t forget to grab a free version of wolfram alpha pro to help you if you’re enrolled at San Francisco State University!

## Topics Covered:

• 2.4: Polynomials
• Vertex of a parabola
• Determine the behavior of a polynomial near $- \infty$ or $\infty$
• 2.5: Rational Functions
• Determine the behavior of rational functions near $- \infty$ to $\infty$
• Determine the vertical and horizontal asymptotes of a rational function
• Determine the holes of a rational function, if they exist.
• 3.1: Exponential and Logarithmic Functions
• Their definitions as inverses
• Practice using #23 – #32 in Precalculus – Prelude to Calculus, 3rd Ed.
• 3.2: Power Rule
• Change of Base
• 3.3: Product and Quotient Rule
• Read p.249-p.252 for applications in scientific settings
• 3.4: Exponential Growth
• Compound Interest (n times per year)
• 3.5: e and the Natural Logarithm
• Understanding the definition of e will enhance your understanding of proofs later on. For now, we know it’s a real number that is approximately equal to 2.71, and it’s associated with Continuous growth!
• 3.7: Exponential Growth Revisited
• Read p.304-p.306 for an application of the approximation methods discussed in 3.6 used in financial estimations.
• Focus on Continuous Compound Interest
• 4.1: Unit Circle