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WikiCards · Card list · Science cards · Inner product space
Rare card · Science
Inner product space, a Rare card
In mathematics, an inner product space is a real or complex vector space endowed with an operation called an inner product.
- Rarity
- Rare
- Domain
- Science
- ATK
- 78
- DEF
- 52
- Power
- 130
- Wikipedia reads a year
- 200,000
Power 130 (ATK + DEF): stronger than 70 % of WikiCards cards.
Inner product space quiz: 3 questions
Three questions on the Inner product space card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The inner product of two vectors in the space is a ______, often denoted with angle brackets such as in ⟨ a, b ⟩.
Answer
scalar. The inner product of two vectors in the space is a scalar, often denoted with angle brackets such as in ⟨ a, b ⟩. From the Inner product space article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Noether's theorem. Noether's theorem 81 · Inner product space 78 · Chi-squared distribution 75 · August 70 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
August. August 310,000 · Inner product space 200,000 · Irrational number 160,000 · Cartesian product 120,000 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 inner product of two vectors in the space is a scalar, often denoted with angle brackets such as in ⟨ a, b ⟩.
- Inner products allow formal definitions of intuitive geometric notions, such as lengths, angles, and orthogonality of vectors.
- Inner product spaces generalize Euclidean vector spaces, in which the inner product is the dot product or scalar product of Cartesian coordinates.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Inner product space article was read about 200,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 78 and blocks with 52: each hit it takes is cut by 21 %.
How to get Inner product space
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 Inner product space in the power ranking, all domains together.
- Richard RíosRare · Society · ATK 76 DEF 54
- CollardRare · Nature · ATK 67 DEF 63
- Buffalo wingRare · Society · ATK 66 DEF 64
- Charlie WardUncommon · Society · ATK 72 DEF 58
- Noether's theoremUncommon · Science · ATK 81 DEF 49
- 1788–89 United States presidential electionUncommon · History · ATK 73 DEF 57
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, Inner product space (revision), CC BY-SA 4.0. Photo : Qef, Public domain, Wikimedia Commons.
