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WikiCards · Card list · Science cards · Harmonic function
Uncommon card · Science
Harmonic function, an Uncommon card
In mathematics, mathematical physics and the theory of stochastic processes, a harmonic function is a twice continuously differentiable function f : U → R , where U is an open subset of R n , that satisfies Laplace's equation, that is, ∂ 2 f ∂ x 1 2 + ∂ 2 f ∂ x 2 2 + ⋯ + ∂ 2 f ∂ x n 2 = 0 everywhere on U .
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 66
- DEF
- 36
- Power
- 102
- Wikipedia reads a year
- 55,000
Power 102 (ATK + DEF): stronger than 55 % of WikiCards cards.
Harmonic function quiz: 3 questions
Three questions on the Harmonic function card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
This is usually ______ as ∇ 2 f = 0 or Δ f = 0
Answer
written. This is usually written as ∇ 2 f = 0 or Δ f = 0 From the Harmonic function article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Harmonic function. Harmonic function 66 · Cylindrical coordinate system 63 · George Smith 58 · Condensation 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.
- This is usually written as ∇ 2 f = 0 or Δ f = 0
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Harmonic function article was read about 55,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 66 and blocks with 36: each hit it takes is cut by 14 %.
How to get Harmonic function
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 Harmonic function in the power ranking, all domains together.
- Cama HospitalUncommon · Society · ATK 62 DEF 40
- Chocolate cakeUncommon · Society · ATK 55 DEF 47
- AestivationUncommon · Nature · ATK 61 DEF 41
- DewUncommon · Nature · ATK 59 DEF 43
- George SmithUncommon · Science · ATK 58 DEF 44
- Lagavulin distilleryUncommon · Society · ATK 59 DEF 43
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
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- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Harmonic function (revision), CC BY-SA 4.0. Photo : Fourthirtytwo, CC BY-SA 3.0, Wikimedia Commons.
