Vector notation, an Uncommon card

The card carries these facts from its Wikipedia article.

• For denoting a vector, the common typographic convention is lower case, upright boldface type, as in v.
• The International Organization for Standardization recommends either bold italic serif, as in v, or non-bold italic serif accented by a right arrow, as in v →.
• In advanced mathematics, vectors are often represented in a simple italic type, like any variable.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Vector notation article was read about 36,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 67 and blocks with 57: each hit it takes is cut by 23 %.

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.

The cards just above and just below Vector notation in the power ranking, all domains together.