WikiCards
Play on iPhone nowFree in Safari. Add it to your Home Screen.Play
WikiCards · Card list · Science cards · Equivalence relation
Uncommon card · Science
Equivalence relation, an Uncommon card
In mathematics, an equivalence relation is a binary relation that is reflexive, symmetric, and transitive.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 70
- DEF
- 48
- Power
- 118
- Wikipedia reads a year
- 66,000
Power 118 (ATK + DEF): stronger than 65 % of WikiCards cards.
Equivalence relation quiz: 3 questions
Three questions on the Equivalence relation card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
A ______ example is numerical equality.
Answer
simpler. A simpler example is numerical equality. From the Equivalence relation article on Wikipedia.
Which of these Wikipedia articles is read the most in a year?
Answer
Boat. Boat 120,000 · Abelian group 95,000 · Equivalence relation 66,000 · Atomic radius 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.
- The equipollence relation between line segments in geometry is a common example of an equivalence relation.
- A simpler example is numerical equality.
- Any number a is equal to 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 Equivalence relation article was read about 66,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 70 and blocks with 48: each hit it takes is cut by 19 %.
How to get Equivalence relation
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 Equivalence relation in the power ranking, all domains together.
- FurUncommon · Nature · ATK 64 DEF 54
- Hindustani classical musicUncommon · Arts · ATK 71 DEF 47
- ShahidUncommon · Society · ATK 72 DEF 46
- InjunctionUncommon · Arts · ATK 69 DEF 49
- Paolo BorsellinoUncommon · Society · ATK 66 DEF 52
- Porsche flat-six engineUncommon · Science · ATK 67 DEF 51
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, Equivalence relation (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.
