A regular hexagonal grid. The honeycomb conjecture was a conjecture until it was demined and became a mathematical theorem that states that a hexagonal tessellation (honeycomb lattice) is the best way to divide a surface into regions of equal area and with the minimum total perimeter.
The first record of the conjecture goes back to 36 BC, by Marco Terencio Varrón, but is often attributed to Pappus of Alexandria (c.290 - C 350). The theorem was demonstrated in 1999 by the mathematician Thomas C. Hales, who mentions in his work that there is reason to believe that the conjecture may have been present in the minds of mathematicians before Varro.
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