toruses

Noun

 * 1) * 1952, F. B. Fuller, Note on trajectories in a solid torus, in Annals of Mathematics 56(3), p439
 * Replace 2 and 4 by thickened toruses 2&prime; and 4&prime; enclosing 3&prime; and replace 1 and 5 by the remaining regions.
 * 1) * 2005, Donald E. Knuth, The Art of Computer Programming vol. 4 fasc. 4, p103
 * Germain Kreweras ... enumerated spanning trees on grids, cylinders, and toruses, as well as oriented spanning trees on directed toruses such as Om &times; On.
 * 1) * 2005, Donald E. Knuth, The Art of Computer Programming vol. 4 fasc. 4, p103
 * Germain Kreweras ... enumerated spanning trees on grids, cylinders, and toruses, as well as oriented spanning trees on directed toruses such as Om &times; On.