kaname.hirano | Personal Research Notes on Mathematics

Is It Impossible to Beat the Market Average in the Stock Market?

I briefly explained the logic behind the common assertion that it is impossible to outperform the market average in the stock market. Additionally, I provided an overview of hedge fund trading strategies that should be considered when engaging in short-term trading.

2026.08.26

Economics

This Week’s Suno AI Gacha 38

This is the 38th entry in this week's Suno AI "gacha" series. I created "You Can't Kill Me (Phoenix Battle Theme)," a track featuring a Phoenix—a character designated to be defeated—flying into a rage and insisting that it won't simply let itself be beaten.

2026.08.20

Music

This Week’s Suno AI Gacha 37

This is the 37th entry in this week's Suno AI "gacha" series. I created "Break the Contract," a symphonic rock battle track depicting the resolution of a centuries-long conflict—the kind of epic showdown you'd expect against a final boss in a dark fantasy setting.

2026.08.12

Music

This Week’s Suno AI Gacha 36

This is the 36th entry in this week's Suno AI "gacha" series. I created a hard rock track titled "Drown the Throne," featuring an elf attempting to submerge an enemy castle in water using magic.

2026.08.06

Music

This Week’s Suno AI Gacha 35

This is the 35th edition of this week's Suno AI "gacha." I created a synth-pop song titled "Burning Fantasy," themed around a Fire-attribute elf born from an elemental variation.

2026.07.28

Music

This Week’s Suno AI Gacha 34

This is the 34th entry in this week's Suno AI "gacha" series. I created a song titled "Queen by Nature"—resembling a character song—centered on an elf who is obsessively fixated on physical beauty.

2026.07.20

Music

Spiritual Momentum Chimpanzee Trading Model

This paper examines a trading model based solely on technical analysis (chart analysis). Specifically, it considers a trading model (a quantitative model) that estimates momentum and executes trades mechanically based on the resulting values.

2026.07.18

EconomicsEssay

How to Distribute MP3 Files for Free

A brief account of how I wanted to distribute MP3 files of songs created with Suno AI for free, and my experience using SoundCloud and BOOST as file-hosting services that actually make this possible.

2026.07.08

EssayMusic

This Week’s Suno AI Gacha 33

This is the 33rd entry in this week's Suno AI "gacha" series. I created an anime-style rock song titled "Beyond the Death Flag," based on the concept of "death flags" found in anime and games.

2026.07.06

Music

Gaussian Mixture Model

This article provides an overview of the Gaussian Mixture Model (GMM). When implementing poker action algorithms, if it is necessary to store probability distributions as data, the parameters of this model can be used as a substitute for maintaining a histogram.

2026.07.05

Probability