
Computational Graph Theory
A humerous presentation on Graph Theory, covering Linked Lists, Binary Search Trees, DAGs, and other relevant data structures and algorithms.

Nondeterministic Time Sucks
This is a record of all of the times software became a drag, sucking up time, resources and energy trying to fix a stupid problem or a silly mistake. These issues have consumed hours of my life, and the solutions to these monkey puzzles were ultimately trivial. I keep this...

Mathematical Cryptography
A presentation on the past, present and future of Mathematical Cryptography

Time in Space Mix

Optimization  Convex Analysis Review
Convex Analysis Review Notes Or, everything you ever needed to know from… Convex analysis? Convex Sets Let \(S \subseteq \mathbb{R}^n\). The set \(S\) is called Convex if for any \(x_1, x_2 \in S\) and \(\lambda \in (0,1)\), it holds that \[\lambda x_1 + (1  \lambda) x_2 \in S\] A...

Optimization  Homework 2
Homework Problems #2 Let \(A \in \mathbb{R}^{n \times n}\) be an arbitrary matrix, and let \(A^S = (1/2)(A + A^T)\) be it’s symmetric counterpart. Show \(x^TAx > 0\) for all \(x \neq 0\) if and only if \(A^S\) is positive definite. WTS \(A^S\) is positive definite \(\Leftrightarrow\) \(x^T A x...

Optimization  Linear Algebra Review
Linear Algebra Review Notes Or, everything you ever needed to know from linear algebra. Vectors Elements \(\mathbf{v}\) in \(\mathbb{R}^n\) are Vectors. A vector can be thought of as \(n\) real numbers stacked on top of each other (column vectors). \[\mathbf{v} = \left( \begin{array}{c} v_1\\ v_2\\ \vdots\\ v_n \end{array} \right)\] Properties...

The Bad Mathematics of Psychometrics
Are you Driving, Amiable, Analytical or Expressive? I do not like psychometrics. At best they are fun surveys you can take in between clicking through buzzfeed articles. At worst, they are kafkaesque personality tests based off of shaky pseudoscience. I learned some job recruiters ask candidates to take these surveys...