Ernie's Leisure Code
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  • May 29, 2025

    How Many Digits Does 125^100 Have Without Using Logarithms?

  • May 29, 2025

    Alice and Bob Multiplicative Game: Can Alice Always Win?

  • May 28, 2025

    Why One Train Arrives First 80% of the Time

  • May 28, 2025

    Probability that One Random Subset is Contained in Another

  • May 28, 2025

    Probability of Amoeba Extinction in a Branching Process

  • May 28, 2025

    Can Mulder Escape the Alien? A Circular Pursuit Problem

  • May 28, 2025

    Can Bob Guess the Larger Number with Better Than 50% Accuracy?

  • May 27, 2025

    Visible Unit Cubes on the Surface of a 10×10×10 Cube

  • May 27, 2025

    The Pancake Problem: Conditional Probability Puzzle

  • May 27, 2025

    Shortest Path for an Ant in a 10×10×10 Cube

  • May 27, 2025

    Probability of No Two Consecutive Heads in n Coin Tosses

  • May 27, 2025

    Expected Tosses Until Two Consecutive Heads

  • May 27, 2025

    Expected Flips Until First Head

  • May 27, 2025

    Counting 1″ and 2″ Jump Sequences Using Matrix Exponentiation

  • May 27, 2025

    Choosing Fairly Between Three Options Using a Coin

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Ernie's Leisure Code

  • Ernie's Leisure Code
  • ernie55ernie@zohomail.com
  • ernie55ernie
  • b01505025

Ernie Chang is a quantitative researcher and PhD candidate working at the intersection of high-frequency trading, market microstructure, and machine learning. His work spans execution-aware alpha modeling, reinforcement learning for trading strategies, and adversarial perspectives on network security, with publications in leading IEEE venues.