Dodgson condensation Dodgson condensation In mathematics, Dodgson condensation is a method of computing the determinants of square matrices. It is named for its inventor, Charles Lutwidge Dodgson (better known as Lewis Carroll). The method in the case of an "n" × "n" matrix is to construct an ("n" − 1) × ("n" − 1) matrix, an ("n" − 2) × ("n" − 2), and so on, finishing with a 1 × 1 matrix, which has one entry, the determinant of the original matrix. This algorithm can be described in the following four steps: One wishes to find We make a matrix of
Skeffington Lutwidge returned to Britain to be refitted and re-coppered in early 1779, after which she returned to North America, capturing the American privateer "Gates" on 29 September 1779. He was involved in the capture of a Spanish convoy on 8 January 1780, and on the night of 16 and 17 January Lutwidge was part of Admiral George Rodney's fleet against Juan de Lángara at the Battle of Cape St. Vincent. His final duties with the "Triton" were to escort a convoy to Menorca and then to the Leeward Islands. Lutwidge then briefly took command of the 74-gun third rate and sailed