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diff --git a/files/practicum/TupleOverloading.icl b/files/practicum/TupleOverloading.icl
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+implementation module TupleOverloading
+
+import StdEnv
+
+instance +    (a,b)   | + a & + b                where
+instance +    (a,b,c) | + a & + b & + c          where
+
+
+instance -    (a,b)   | - a & - b                where
+instance -    (a,b,c) | - a & - b & - c          where
+
+instance *    (a,b)   | * a & * b                where
+instance *    (a,b,c) | * a & * b & * c          where
+
+instance /    (a,b)   | / a & / b                where
+instance /    (a,b,c) | / a & / b & / c          where
+
+instance zero (a,b)   | zero a & zero b          where
+instance zero (a,b,c) | zero a & zero b & zero c where
+
+instance one  (a,b)   | one a & one b            where
+instance one  (a,b,c) | one a & one b & one c    where
+
+instance ~    (a,b)   | ~ a & ~ b                where
+instance ~    (a,b,c) | ~ a & ~ b & ~ c          where
+
+Start  = (test (1,2), test (1,2,3))
+
+test a = ( zero + a == a    && a    == a + zero
+         , a - zero == a    && a    == ~ (zero - a)
+         ,  one * a == a    && a    == a * one
+         , zero * a == zero && zero == a * zero
+         ,  a / one == a
+         ,  ~ (~ a) == a
+         )