Alias: c+. Infix operator. x
y is by default interpreted as CirclePlus[x,y]. Used in mathematics for various operations related to addition, such as direct sum and addition modulo two. Also sometimes used to indicate a vector pointing into the page. See The Mathematica Book: Section 1.10.8, Section 3.10.4. See also: \[CircleTimes], \[CircleMinus], \[Xor].
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