Definition of C 1

C1 or C-1 may refer to:

In vehicles

• C1 Corvette, any model corvette sold from 1953 to 1962, denoted a solid-axle rearend
• BMW C1, a security scooter with a roof
• Citroën C1, a small car
• Ford C1 platform, the Ford Motor Company's global compact car automobile platform
• C1, a British designation for a cargo/transport aircraft
• Kawasaki C-1, an indigenous transport aircraft of the Japanese Air Self-Defense Forces
• C-1 Trader, a cargo-version of the S-2 Tracker anti-submarine warfare aircraft of the United States Navy
• Douglas C-1, a cargo/transport airplane produced by Douglas Aircraft for the U.S. Army Air Service starting in 1925
• HMS C1, a C-class submarine of the Royal Navy
• USS C-1 (SS-9), a C-class submarine of the United States Navy
• USS Newark (C-1), a protected cruiser of the United States Navy
• AEG C.I, a German World War I reconnaissance aircraft
• 'C1' was the top category in Group C sportscar racing, used between 1985 and 1990

In computing

• C1 (protocol), a protocol for file transfer, also known as "Punter"
• C0 and C1 control codes defined in ISO 6429
• Counter-Strike "C1", a slang expression from the video game, used to express agreement
• TCSEC C1 security class
• C-One single-board microcomputer
• ATI C1, codename of the Xbox 360 GPU "Xenos"

In mathematics, a continuous function is a function for which, intuitively, small changes in the input result in small changes in the output. Otherwise, a function is said to be discontinuous. A continuous function with a continuous inverse function is called bicontinuous. An intuitive though imprecise (and inexact) idea of continuity is given by the common statement that a continuous function is a function whose graph can be drawn without lifting the chalk from the blackboard.