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Uncommon card · Science
Commutative diagram, an Uncommon card
In mathematics, and especially in category theory, a commutative diagram is a diagram such that all directed paths in the diagram with the same start and endpoints lead to the same result.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 55
- DEF
- 42
- Power
- 97
- Wikipedia reads a year
- 22,000
Power 97 (ATK + DEF): stronger than 40 % of WikiCards cards.
Commutative diagram quiz: 3 questions
Three questions on the Commutative diagram card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
It is said that commutative diagrams play the role in category theory that ______ play in algebra.
Answer
equations. It is said that commutative diagrams play the role in category theory that equations play in algebra. From the Commutative diagram article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Bekenstein bound. Bekenstein bound 61 · North America Nebula 58 · Commutative diagram 55 · Hamelia patens 50 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Bekenstein bound. Bekenstein bound 39,000 · Identity 29,000 · Commutative diagram 22,000 · Automatic Computing Engine 15,000 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.
- It is said that commutative diagrams play the role in category theory that equations play in algebra.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Commutative diagram article was read about 22,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 55 and blocks with 42: each hit it takes is cut by 17 %.
How to get Commutative diagram
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 Commutative diagram in the power ranking, all domains together.
- ConfraternityUncommon · Society · ATK 57 DEF 40
- Hamelia patensUncommon · Nature · ATK 50 DEF 47
- Irene FenwickUncommon · Arts · ATK 54 DEF 43
- House of cardsUncommon · Society · ATK 49 DEF 48
- Prison islandUncommon · Nature · ATK 60 DEF 37
- Titi monkeyUncommon · Nature · ATK 61 DEF 36
Card lists
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Credits
Text : Wikipedia, Commutative diagram (revision), CC BY-SA 4.0. Photo : IkamusumeFan, CC BY-SA 4.0, Wikimedia Commons.


