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Group Theory Textbook
From the axioms to the classification of finite groups. A textbook series building definitions, theorems, and proofs in a systematic progression.
Number Theory Textbook
From divisibility and congruences to p-adic numbers and algebraic integers. A textbook series building definitions, theorems, and proofs in a systematic progression.
Group Theory — Between the Lines
From the group axioms to group actions. A six-part series that answers the questions textbooks leave between the lines, building intuition for abstract algebra.
Combinatorics — Between the Lines
From the fundamentals of counting to the connection between DP and generating functions. An eight-part series that answers the questions textbooks leave between the lines, building intuition for combinatorics.
Linear Algebra — Between the Lines
From the axioms of vector spaces to inner product spaces. A six-part series that answers the questions textbooks leave between the lines, building intuition for linear algebra.
Combinatorics Textbook
From the fundamentals of counting to algebraic combinatorics. A textbook series building definitions, theorems, and proofs in a systematic progression.
Graph Theory Textbook
From the definition of a graph to planarity, coloring, and matroids. A textbook series building definitions, theorems, and proofs in a systematic progression.
Folio Basics
A complete guide to using Folio. From the LaTeX syntax tutorial (6 parts + reference) to the monetization guide — everything you need from writing to earning.
Linear Algebra Textbook
From the axioms of vector spaces to Jordan normal form. A textbook series building definitions, theorems, and proofs in a systematic progression.
Graph Theory — Between the Lines
From the definition of a graph to matroids. An eight-part series that answers the questions textbooks leave between the lines, building intuition for graph theory.
Number Theory — Between the Lines
From divisibility and congruences to RSA cryptography. An eight-part series that answers the questions textbooks leave between the lines, building intuition for number theory.