Carroll diagram Carroll diagram A Carroll diagram, Lewis Carroll's square, biliteral diagram or a "two-way table" is a diagram used for grouping things in a yes/no fashion. Numbers or objects are either categorised as 'x' (having an attribute x) or 'not x' (not having an attribute 'x'). They are named after Lewis Carroll, the pseudonym of Charles Lutwidge Dodgson. Although Carroll diagrams can be as simple as the first one above, the most well known types are those similar to the second one, where two attributes are shown. The <nowiki>'</nowiki>universe<nowiki>'</nowiki> of a Carroll diagram is contained within the boxes in the diagram,
Skeffington Lutwidge the Navy, and is listed as a lieutenant in 1763, taking command of the purchased cutter in April that year. He remained with her until 1765, serving in the area of Liverpool. Lutwidge, by now a commander, commissioned the bomb vessel in June 1771, and served in the Irish Sea until the "Carcass" was paid off in April 1773. The "Carcass" was then refitted at Sheerness between March and April for a voyage to the Arctic, with Lutwidge retaining command. The expedition, under the overall command of Constantine Phipps, who commanded , sailed from the Nore on 10 June 1773.