WikiCards · Card list · Science cards · Projective space
Uncommon card · Science
Projective space, an Uncommon card
In mathematics, the concept of a projective space originated from the visual effect of perspective, where parallel lines seem to meet at infinity.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 72
- DEF
- 54
- Power
- 126
- Wikipedia reads a year
- 40,000
Power 126 (ATK + DEF): stronger than 60 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- A projective space may thus be viewed as the extension of a Euclidean space, or, more generally, an affine space with points at infinity, in such a way that there is one point at infinity of each direction of parallel lines.
- This definition of a projective space has the disadvantage of not being isotropic, having two different sorts of points, which must be considered separately in proofs.
- Therefore, other definitions are generally preferred.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Projective space article was read about 40,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 72 and blocks with 54: each hit it takes is cut by 22 %.
How to get Projective 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.
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Card lists
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Credits
Text : Wikipedia, Projective space (revision), CC BY-SA 4.0. Photo : User:MikKBDFJKGeMalak, Public domain, Wikimedia Commons.