Confirmed. TOP is one big discussion of ranges. Sklansky didn't call them ranges, but the concept is the same: your opponent holds a distribution of possible ha

Confirmed. TOP is one big discussion of ranges. Sklansky didn't call them ranges, but the concept is the same: your opponent holds a distribution of possible hands, and you're making decisions based on what you think the makeup of that distribution is (and also based on what you think your opponent thinks your distribution is). Also, in 2006 Chen and Ankenman published The Mathematics of Poker which quite explicitly deals with the analysis of hand distributions (e.g. chapter 8: Playing Accurately Part II: Hand vs. Distribution, chapter 9: Adaptive Play: Distribution vs. Distribution). So even if we pretend Sklansky's TOP doesn't deal with ranges, Chen clearly does, and came before Galfond's 2007 Bluff article [1]. [1] - http://www.bluff.com/magazine/g-bucks-conceptualizing-money-matters-9017/ http://www.bluff.com/magazine/g-bucks-conceptualizing-money-...