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WikiCards · Card list · Science cards · Preorder
Uncommon card · Science
Preorder, an Uncommon card
In mathematics, in particular in order theory, a preorder or quasiorder is a binary relation that is reflexive and transitive.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 65
- DEF
- 35
- Power
- 100
- Wikipedia reads a year
- 26,000
Power 100 (ATK + DEF): stronger than 40 % of WikiCards cards.
Preorder quiz: 3 questions
Three questions on the Preorder card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
This relation is ______ as every integer divides itself.
Answer
reflexive. This relation is reflexive as every integer divides itself. From the Preorder article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Preorder. Preorder 65 · Simple group 62 · Environmental studies 58 · Hoist 55 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.
- The name preorder is meant to suggest that preorders are almost partial orders, but not quite, as they are not necessarily antisymmetric.
- A natural example of a preorder is the divides relation "x divides y" between integers.
- This relation is reflexive as every integer divides itself.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Preorder article was read about 26,000 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 35: each hit it takes is cut by 14 %.
How to get Preorder
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 Preorder in the power ranking, all domains together.
- Filip HronekUncommon · Society · ATK 63 DEF 37
- Herpes simplex encephalitisUncommon · Science · ATK 62 DEF 38
- Make-up artistUncommon · Arts · ATK 57 DEF 43
- Alexei ShirovUncommon · Society · ATK 61 DEF 39
- Gulbadan BegumUncommon · Science · ATK 66 DEF 34
- Howard K. SmithUncommon · Society · ATK 61 DEF 39
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, Preorder (revision), CC BY-SA 4.0. Photo : Caleb Stanford, CC0, Wikimedia Commons.
