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WikiCards · Card list · Science cards · Quaternion
Rare card · Science
Quaternion, a Rare card
In mathematics, the quaternions form a number system similar to the complex numbers, with the usual arithmetical operations of addition, subtraction, multiplication, and division, but with four real-number components instead of two.
- Rarity
- Rare
- Domain
- Science
- ATK
- 85
- DEF
- 78
- Power
- 163
- Wikipedia reads a year
- 360,000
Power 163 (ATK + DEF): stronger than 85 % of WikiCards cards.
Quaternion quiz: 3 questions
Three questions on the Quaternion card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Quaternions can be used to represent vectors in three-dimensional space, which provides a ______ of the quotient of two vectors.
Answer
definition. Quaternions can be used to represent vectors in three-dimensional space, which provides a definition of the quotient of two vectors. From the Quaternion article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Quaternion. Quaternion 85 · Satoshi Nakamoto 80 · United States Consumer Product Safety Commission 76 · William Jackson Hooker 72 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Satoshi Nakamoto. Satoshi Nakamoto 1,400,000 · Quaternion 360,000 · William Jackson Hooker 9,900 · Environmental resource management 7,400 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- Unlike with the complex numbers, quaternion multiplication is not commutative, meaning that the result of multiplying two quaternions depends on their order.
- Quaternions can be used to represent vectors in three-dimensional space, which provides a definition of the quotient of two vectors.
- Quaternions were first described by the Irish mathematician and physicist William Rowan Hamilton in 1843, and in his honor the set of all quaternions is conventionally denoted by H or H. A generic quaternion is usually represented in the form a + b i + c j + d k, where the coefficients a, b, c, d are real numbers, and 1, i, j, k are the basis vectors or basis elements.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Quaternion article was read about 360,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 85 and blocks with 78: each hit it takes is cut by 31 %.
How to get Quaternion
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Quaternion in the power ranking, all domains together.
- Brian WilliamsRare · Society · ATK 76 DEF 87
- HarareRare · Society · ATK 83 DEF 80
- Patrick RoyRare · Society · ATK 80 DEF 83
- Wasim AkramRare · History · ATK 79 DEF 84
- Buddy RichRare · Arts · ATK 77 DEF 86
- GumboRare · Society · ATK 71 DEF 92
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Quaternion (revision), CC BY-SA 4.0. Photo : Cmglee, CC BY-SA 4.0, Wikimedia Commons.
