# Dilemme du prisonnier

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88 (number) Eighty-Eight is a refactorable number, a primitive semiperfect number and an untouchable number. It is also an hexadecagonal number. Since it is possible to find sequences of 88 consecutive integers such that each inner member shares a factor with either the first or the last member, 88 is an Erdős–Woods number. In base 10, it is a palindromic number and a repdigit. Cameron's Triad page Akron is a new connection game played with marbles on a square grid. Two players, Black and White, strive to connect their edges of the board with pieces of their colour. Each turn a piece can be played at any empty board point, or a piece already on the board can be moved to any connected empty point. Most games in the connection family, such as the classics Hex and Y, tend to be hexagonal in nature to avoid problems with deadlocks in the plane. Akron solves this problem by letting players stack pieces over enemy blocks.

Trifunctional hypothesis This part of a 12th-century Swedish tapestry has been interpreted to show, from left to right, the one-eyed Odin, the hammer-wielding Thor and Freyr holding up wheat. Terje Leiren believes this grouping corresponds closely to the trifunctional division. The trifunctional hypothesis of prehistoric Proto-Indo-European society postulates a tripartite ideology ("idéologie tripartite") reflected in the existence of three classes or castes—priests, warriors, and commoners (farmers or tradesmen)—corresponding to the three functions of the sacral, the martial and the economic, respectively. This thesis is especially associated with the French mythographer Georges Dumézil[1] who proposed it in 1929 in the book Flamen-Brahman,[2] and later in Mitra-Varuna.[3] Three-way division According to Dumézil, Proto-Indo-European society comprised three main groups corresponding to three distinct functions: