McFarland Carillon McFarland Carillon __notoc__ The McFarland Carillon, sometimes referred to as the McFarland Bell Tower or McFarland Memorial Bell Tower is a 185-foot bell tower located on the South Quad of the University of Illinois at Urbana-Champaign. The tower was approved by the University's trustees in 2005 and built in 2008-2009. It was designed by Fred Guyton of Peckham, Guyton, Albers & Viets. The carillon has 49 bells, which can be controlled by a computer with 500 pre-programmed songs, or can be played directly with a keyboard. The carillon project began as an attempt to upgrade and renovate the University Chimes
Partition of a set "coarser" than "α"—if every element of "α" is a subset of some element of "ρ". Informally, this means that "α" is a further fragmentation of "ρ". In that case, it is written that "α" ≤ "ρ". This "finer-than" relation on the set of partitions of "X" is a partial order (so the notation "≤" is appropriate). Each set of elements has a least upper bound and a greatest lower bound, so that it forms a lattice, and more specifically (for partitions of a finite set) it is a geometric lattice. The "partition lattice" of a 4-element set has 15 elements