The Smarandache Groupoid, Ring, and Field Dwiraj Talukdar Head Department of Mathematics Nalbari College Nalbari, Assam, India Definition 1: Let the set Zp = {0, 1, 2, ..., p-1}. The elements of Zp can be written uniquely as m-adic numbers. Let r = ( a a ... a a ) and s = ( b b ... b b ) be two n-1 n-2 1 0 m n-1 n-2 1 0 m elements from Zp. Then one introduces the operation: r /-\ s = (|a - b ||a - b | ... |a - b ||a - b |) n-1 n-1 n-2 n-1 1 1 0 0 m where |x-y| is the absolute value of x-y. The set ( Zp, /-\ ) is known as Smarandache Groupoid. The complement of r, C(r) = r /-\ Sup(Zp), where Sup(Zp) is the maximal element of Zp. We say that rRs, iff r /-\ C(r) = s /-\ C(s). R is a relation of equivalence which partitions Zp into equivalence classes. The below equivalence class is defined as D-form: D = { r in Zp: r /-\ C(r) = Sup(Zp) }. Sup(Zp) Definitions 2-3: Let's introduce two more operations on Zp: r /+\ s = (\a + b \\a + b \ ... \a + b \\a + b \) n-1 n-1 n-2 n-1 1 1 0 0 m where \x+y\ is the remainder of x+y modulo m. r /*\ s = (\a * b \\a * b \ ... \a * b \\a + b \) n-1 n-1 n-2 n-1 1 1 0 0 m where \x*y\ is the remainder of x*y modulo m. Then the set ( Zp, /+\, /*\ ) is known as the Smarandache Ring. If m is prime, then the set ( Zp, /+\, /*\ ) is known as the Smarandache Field. Questions: 1) Study the Smarandache Ring, and the Smarandache Field. 2) If one introduces other operations on Zp: r /^\ s = (\a ^ b \\a ^ b \ ... \a ^ b \\a ^ b \) n-1 n-1 n-2 n-1 1 1 0 0 m where \x^y\ is the remainder of x^y (x to the power y) modulo m. Study ( Zp, /^\ ). 3) And in a similar way for any introduced digit operation on Zp: r /F\ s = (\a F b \\a F b \ ... \a F b \\a F b \) n-1 n-1 n-2 n-1 1 1 0 0 m where \xFy\ is the the remainder of xFy (i.e. F(x,y), for F a given function, F: N -> N) modulo m.