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definition module TupleOverloading
import StdEnv
instance + (a,b) | + a & + b
instance + (a,b,c) | + a & + b & + c
instance - (a,b) | - a & - b
instance - (a,b,c) | - a & - b & - c
instance * (a,b) | * a & * b
instance * (a,b,c) | * a & * b & * c
instance / (a,b) | / a & / b
instance / (a,b,c) | / a & / b & / c
instance zero (a,b) | zero a & zero b
instance zero (a,b,c) | zero a & zero b & zero c
instance one (a,b) | one a & one b
instance one (a,b,c) | one a & one b & one c
instance ~ (a,b) | ~ a & ~ b
instance ~ (a,b,c) | ~ a & ~ b & ~ c
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