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WikiCards · Card list · Science cards · Complex number
Rare card · Science
Complex number, a Rare card
In mathematics, a complex number is a number of the form a + b i , where a and b are real numbers, and i is the imaginary unit, a number that satisfies the equation i 2 = − 1 , the number a is called the real part of a + b i , and b is called the imaginary part.
- Rarity
- Rare
- Domain
- Science
- ATK
- 85
- DEF
- 83
- Power
- 168
- Wikipedia reads a year
- 320,000
Power 168 (ATK + DEF): stronger than 85 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- The complex numbers form a number system which extends the real numbers and supports the same basic arithmetic operations of addition, subtraction, multiplication, and division, satisfying the same associative, commutative, and distributive laws.
- This makes the complex numbers a field.
- The set of complex numbers is denoted by either of the symbols C or C. Because any nonzero real number, whether positive or negative, squares to a positive number, taking the square root of a negative number was historically considered impossible.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Complex number article was read about 320,000 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 83: each hit it takes is cut by 33 %.
How to get Complex number
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.
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The cards just above and just below Complex number in the power ranking, all domains together.
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- Bakersfield, CaliforniaRare · Society · ATK 90 DEF 78
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- Mexican War of IndependenceRare · History · ATK 83 DEF 85
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, Complex number (revision), CC BY-SA 4.0. Photo : IkamusumeFan, CC BY-SA 4.0, Wikimedia Commons.
