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WikiCards · Card list · Science cards · Power set
Uncommon card · Science
Power set, an Uncommon card
In mathematics, the power set of a set S is the set of all subsets of S, including the empty set and S itself.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 65
- DEF
- 37
- Power
- 102
- Wikipedia reads a year
- 63,000
Power 102 (ATK + DEF): stronger than 55 % of WikiCards cards.
Power set quiz: 3 questions
Three questions on the Power set card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Any ______ of P is called a family of sets over S.
Answer
subset. Any subset of P is called a family of sets over S. From the Power set article on Wikipedia.
Which of these Wikipedia articles is read the most in a year?
Answer
Perlin noise. Perlin noise 160,000 · Brocade 98,000 · Power set 63,000 · 1-Propanol 50,000 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.
- In axiomatic set theory, the existence of the power set of any set is postulated by the axiom of power set.
- The powerset of S is variously denoted as P, 𝒫, P, P, or 2S.
- Any subset of P is called a family of sets over S.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Power set article was read about 63,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 65 and blocks with 37: each hit it takes is cut by 15 %.
How to get Power set
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 Power set in the power ranking, all domains together.
- Liv Lisa FriesUncommon · Arts · ATK 59 DEF 43
- Stefano De MartinoUncommon · Society · ATK 61 DEF 41
- CondensationUncommon · Science · ATK 55 DEF 47
- ArtifactUncommon · History · ATK 61 DEF 41
- Ryan O'CallaghanUncommon · Society · ATK 58 DEF 44
- Cama HospitalUncommon · Society · ATK 62 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, Power set (revision), CC BY-SA 4.0. Photo : KSmrq, CC BY-SA 3.0, Wikimedia Commons.
