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WikiCards · Card list · Science cards · Universe
Common card · Science
Universe, a Common card
In mathematics, and particularly in set theory, category theory, type theory, and the foundations of mathematics, a universe is a collection that contains all the entities one wishes to consider in a given situation.
- Rarity
- Common
- Domain
- Science
- ATK
- 63
- DEF
- 29
- Power
- 92
- Wikipedia reads a year
- 15,000
Power 92 (ATK + DEF): stronger than 35 % of WikiCards cards.
Universe quiz: 3 questions
Three questions on the Universe card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
These classes can serve as inner models for various ______ systems such as ZFC or Morse–Kelley set theory.
Answer
axiomatic. These classes can serve as inner models for various axiomatic systems such as ZFC or Morse–Kelley set theory. From the Universe article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Universe. Universe 63 · Dodge St. Regis 58 · USS Beloit 54 · Gideon Sundback 46 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 set theory, universes are often classes that contain all sets for which one hopes to prove a particular theorem.
- These classes can serve as inner models for various axiomatic systems such as ZFC or Morse–Kelley set theory.
- Universes are of critical importance to formalizing concepts in category theory inside set-theoretical foundations.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Universe article was read about 15,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 63 and blocks with 29: each hit it takes is cut by 12 %.
How to get Universe
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 Universe in the power ranking, all domains together.
- Nathalie SarrauteCommon · Arts · ATK 58 DEF 34
- Paul RosenmöllerCommon · History · ATK 55 DEF 37
- Shana AlexanderCommon · Society · ATK 55 DEF 37
- Yevgeny LeonovCommon · Arts · ATK 62 DEF 30
- Andy WallaceCommon · Society · ATK 65 DEF 27
- Christopher CockerellCommon · History · ATK 57 DEF 35
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, Universe (revision), CC BY-SA 4.0. Photo : Erez Segal (based on copy-rights free work), Public domain, Wikimedia Commons.
