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liam-flaherty.com

  • Maths
    • Probability And Stochastic Processes
    • Linear Algebra
    • Real Analysis
    • Statistical Inference
    • Time Series
    • Abstract Algebra
    • Selected Problems
  • Programming
    • Excel
      • Conditional Logic
        • Chaining If Statements
        • Utilizing ISNUMBER And ISBLANK
        • Conditional Arithmetic
      • Working With Strings
        • Scrub And Standardize
        • Reorder Strings
        • Extract Parts Of Strings
        • Breaking Strings Into Parts
        • Frequency Search
        • String Matching
      • Working With Dates
        • Transform To Numeric
        • Extract Parts Of Date
        • End Of Months
        • Days Between
        • Workday Increment
      • Dynamic Ranges
        • INDIRECT Calculations
        • Reshaping, Rearranging, And Appending Dataframes
        • Filtering Results
    • R
      • Web Scraping
        • Grabbing XPath
        • URL Convention
        • rvest Functions
        • Full Script
      • Random Variables And Distributions
        • Random Numbers
        • Density Functions
        • Cumulative Distribution Function
        • Quantile Function
        • Visual
        • Full Script
      • Querying API’s
        • Build URL
        • Use GET
        • Convert JSON To Plaintext
        • Full Script
      • Shiny Apps
      • Tidyverse And SQL-Style Joins
    • Python
      • Discretizing Geometric Brownian Motion
    • VBA
    • LaTeX
  • Finance/Economics
    • Macro
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Maths

I have written up some notes with the goal of providing a reference for common topics as well as addressing specific problems.

You can find some of these pieces below, or use the navigation in the drop-down menu above (hover over “Maths” without clicking) to search for pieces by topic.

Probability And Stochastic Processes Notes
Statistical Inference Notes
Time Series Notes
Hoffman & Kunze Linear Algebra Problems
Matrix Theory Notes
Real Analysis Notes
Riemann’s Explicit Formula For Prime Counting Function
Cryptography Overview
Applications Of Group Theory To Music
Fundamental Theorem Of Linear Algebra
Derivation Of Euler’s Formula From First Principles
Calc Proofs From First Principles
Linear Algebra Basics
Basic Arithmetic Primer
Options Basics

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