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WikiCards · Card list · Science cards · Noncrossing partition
Common card · Science
Noncrossing partition, a Common card
In combinatorics, the topic of noncrossing partitions has assumed some importance because of its application to the theory of free probability.
- Rarity
- Common
- Domain
- Science
- ATK
- 47
- DEF
- 13
- Power
- 60
- Wikipedia reads a year
- 4,800
Power 60 (ATK + DEF): stronger than 5 % of WikiCards cards.
Noncrossing partition quiz: 3 questions
Three questions on the Noncrossing partition card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The number of noncrossing ______ of a set of n elements is the nth Catalan number.
Answer
partitions. The number of noncrossing partitions of a set of n elements is the nth Catalan number. From the Noncrossing partition article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Noncrossing partition. Noncrossing partition 47 · Italian partisan republics 43 · Luc Marius Ibriga 40 · Dodge Sidewinder 37 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Bharat Nirman. Bharat Nirman 7,200 · Noncrossing partition 4,800 · Italian partisan republics 3,600 · Luc Marius Ibriga 130 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.
- The number of noncrossing partitions of a set of n elements is the nth Catalan number.
- The number of noncrossing partitions of an n-element set with k blocks is found in the Narayana number triangle.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Noncrossing partition article was read about 4,800 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 47 and blocks with 13: each hit it takes is cut by 5 %.
How to get Noncrossing partition
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 Noncrossing partition in the power ranking, all domains together.
- Robert WerykCommon · Science · ATK 38 DEF 22
- Turunmaa-class gunboatCommon · History · ATK 46 DEF 14
- Matanikau RiverCommon · Nature · ATK 49 DEF 11
- Johannes FriedCommon · Science · ATK 47 DEF 13
- Nava KailasamCommon · Society · ATK 41 DEF 19
- Papora peopleCommon · Society · ATK 38 DEF 22
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, Noncrossing partition (revision), CC BY-SA 4.0. Photo : Watchduck You can name the author as "T. Piesk", "Tilman Piesk" or "Watchduck"., CC BY 3.0, Wikimedia Commons.
