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WikiCards · Card list · Science cards · Identity
Uncommon card · Science
Identity, an Uncommon card
In mathematics, an identity is an equality relating one mathematical expression A to another mathematical expression B, such that A and B produce the same value for all values of the variables within a certain domain of discourse.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 60
- DEF
- 37
- Power
- 97
- Wikipedia reads a year
- 29,000
Power 97 (ATK + DEF): stronger than 40 % of WikiCards cards.
Identity quiz: 3 questions
Three questions on the Identity card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
For example, 2 = a 2 + 2 a b + b 2 and cos 2 θ + sin 2 θ = 1 are ______.
Answer
identities. For example, 2 = a 2 + 2 a b + b 2 and cos 2 θ + sin 2 θ = 1 are identities. From the Identity article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Jeans instability. Jeans instability 63 · Identity 60 · Intrusive rock 56 · Dumbbell Nebula 52 ATK in WikiCards.
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.
- In other words, A = B is an identity if A and B define the same functions, and an identity is an equality between functions that are differently defined.
- For example, 2 = a 2 + 2 a b + b 2 and cos 2 θ + sin 2 θ = 1 are identities.
- Identities are sometimes indicated by the triple bar symbol ≡ instead of =, the equals sign.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Identity article was read about 29,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 60 and blocks with 37: each hit it takes is cut by 15 %.
How to get Identity
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 Identity in the power ranking, all domains together.
- Arnaldo Tamayo MéndezUncommon · History · ATK 55 DEF 42
- Bill WillinghamUncommon · Arts · ATK 64 DEF 33
- Calvin JohnsonUncommon · Arts · ATK 59 DEF 38
- ImagawayakiUncommon · Society · ATK 55 DEF 42
- Lady SunUncommon · History · ATK 57 DEF 40
- Nice PeterUncommon · Arts · ATK 57 DEF 40
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, Identity (revision), CC BY-SA 4.0. Photo : Vectorization: Alhadis, CC BY-SA 3.0, Wikimedia Commons.
