Geometric Brownian motion, an Uncommon card

A geometric Brownian motion, also known as an exponential Brownian motion, is a continuous-time stochastic process in which the logarithm of the randomly varying quantity follows a Brownian motion with drift.
From the Wikipedia article

Rarity: Uncommon
Domain: Science
ATK: 59
DEF: 31
Power: 90
Wikipedia reads a year: 66,000

Power 90 (ATK + DEF): stronger than 30 % of WikiCards cards.

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The facts on the card

The card carries these facts from its Wikipedia article.

It is an important example of stochastic processes satisfying a stochastic differential equation, in particular, it is used in mathematical finance to model stock prices in the Black–Scholes model.

Why it is Uncommon

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Geometric Brownian motion article was read about 66,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 59 and blocks with 31: each hit it takes is cut by 12 %.

How to get Geometric Brownian motion

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Credits

Text : Wikipedia, Geometric Brownian motion (revision), CC BY-SA 4.0. Photo : Astronomylantian, CC BY-SA 4.0, Wikimedia Commons.