Videos

All 22 Dummy R videos, in the order the tracks teach them. Each page has the lesson it belongs to, what to remember, and interview problems to try next.

Calculus

5 videos

  1. Why Does 0/0 Have an Answer?

    Lesson 1 of 10, Limits

  2. What Is Your Speedometer Actually Measuring?

    Lesson 2 of 10, Derivatives

  3. Can You Differentiate x^x?

    Lesson 3 of 10, Differentiation Rules

  4. This Sum Is Secretly an Integral

    Lesson 4 of 10, Integration Fundamentals

  5. Can You Estimate √101 Without a Calculator?

    Lesson 10 of 10, Taylor Series & Sequences

Linear Algebra

1 video

  1. Correlation Is Secretly an Angle

    Lesson 1 of 8, Vectors and Dot Products

Probability

3 videos

  1. 5 Probability Questions Every Quant Interview Asks

    Lesson 4 of 10, Bayes' Theorem

  2. Why Is Expected Value an Integral?

    Lesson 7 of 10, Continuous Distributions

  3. Bet on Red 200 Times: Your Real Odds

    Lesson 9 of 10, LLN & Central Limit Theorem

Discrete Stochastic Processes

4 videos

  1. Random Walks: Why Twice as Far Takes 4× as Long

    Lesson 1 of 10, Random Walks

  2. Markov Chains for Dummies

    Lesson 2 of 10, Markov Chains

  3. Martingales for Dummies

    Lesson 4 of 10, Martingales and Optional Stopping

  4. Coupon Collector’s Problem for Dummies

    Lesson 5 of 10, The Coupon Collector

Stochastic Calculus

5 videos

  1. Brownian Motion for Dummies

    Lesson 1 of 11, Brownian Motion

  2. Quadratic Variation for Dummies

    Lesson 2 of 11, Quadratic Variation

  3. Itô's Lemma for Dummies

    Lesson 5 of 11, Itô's Lemma

  4. Girsanov's Theorem for Dummies

    Lesson 9 of 11, Girsanov's Theorem

  5. Feynman-Kac for Dummies

    Lesson 11 of 11, Feynman-Kac

Finance & Options

3 videos

  1. Why the Odds Don't Matter When Pricing an Option

    Lesson 3 of 12, Risk-Neutral Pricing

  2. Risk-Neutral Probabilities for Dummies

    Lesson 3 of 12, Risk-Neutral Pricing

  3. Black Scholes PDE for Dummies

    Lesson 6 of 12, The Black-Scholes PDE

On their own

Not tied to a lesson yet.

  1. Differential Equations for Dummies

    Equations whose answer is a function: how to read them, solve the common ones, and why they lead to stochastic differential equations.