Löb's theorem — In mathematical logic, Löb s theorem states that in a theory with Peano arithmetic, for any formula P, if it is provable that if P is provable then P , then P is provable. I.e.:if PA vdash Bew(# P) ightarrow P, then PA vdash Pwhere Bew(#P) means… … Wikipedia
Admissible rule — In logic, a rule of inference is admissible in a formal system if the set of theorems of the system is closed under the rule. The concept of an admissible rule was introduced by Paul Lorenzen (1955).DefinitionsThe concept of admissibility, as… … Wikipedia
Beer pong (paddles) — Beer pong is a drinking game loosely based on ping pong, that involves use of paddles to hit a ping pong ball into obstacles on the opposing side. The origin of beer pong is generally credited to Dartmouth College.[1] The name beer pong also… … Wikipedia
Dartmouth pong — Pong (Dartmouth) is a drinking game played at Dartmouth College that is loosely based on ping pong. A 2005 survey conducted by former Dartmouth College Statistician John Pryor and reported on in The Dartmouth found that 80% of Dartmouth students… … Wikipedia
Doxastic logic — is a modal logic concerned with reasoning about beliefs. The term doxastic derives from the ancient Greek δόξα, doxa, which means belief. Typically, a doxastic logic uses Bx to mean It is believed that x is the case, and the set denotes a set of… … Wikipedia
Table tennis — Ping Pong redirects here. For other uses, see Ping Pong (disambiguation). Table tennis Table tennis at the highest level Highest governing body ITTF Nickname(s) Ping pong … Wikipedia
tennis — /ten is/, n. a game played on a rectangular court by two players or two pairs of players equipped with rackets, in which a ball is driven back and forth over a low net that divides the court in half. Cf. lawn tennis. See illus. under racket2.… … Universalium
Tennis — This article is about the sport. For other uses, see Tennis (disambiguation). Tennis The … Wikipedia
Water polo — is a team water sport. A team consists of six field players and one goalkeeper. The winner of the game is the team that scores more goals. Gameplay involves swimming, players passing the ball while being defended by opponents, and scoring by… … Wikipedia
Tennis games — are often used to help players of all abilities to practice the different strokes involved in tennis. The number of participants needed varies from as few as two players to as many players as can fit on a tennis court. These games are often used… … Wikipedia