MMW | Module 5.1 & 5.3 THE DIVISION ALGORITHM & RESIDUE CLASSES, and PROPERTIES OF CONGRUENCE

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19 Terms

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a = bq + r

In general, if we divide an integer a by an integer b, we get?

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Positive

a = bq + r

where b is _______ and the existence of q and r are such that r is strictly less than b but greater than or equal to 0.

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Greater than or equal to 0

a = bq + r

where b is positive and the existence of q and r are such that r is strictly less than b but ?

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Strictly less than

where b is positive and the existence of q and r are such that r is __________ b but greater than or equal to 0.

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Dividend

a = bq + r

a is?

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Divisor

a = bq + r

b is?

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Quotient

a = bq + r

q is?

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Remainder

a = bq + r

r is?

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a = bq + r

This is the Division Algorithm. It describes the process in the long division but it will not tell us how to find the quotient and the remainder.

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Division Algorithm

a = bq + r

This is the __________. It describes the process in the long division but it will not tell us how to find the quotient and the remainder.

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Residue Class

When dividing by b, the division algorithm informs us that there could be b different remainders. We can group integers by the remainder if we fix this divisor. Each group is referred to as a?

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Remainder Class Modulo b

Residue Class is also known as?

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Congruence

Comparing remainders of two integers is another interesting topic in the field of mathematics particularly in Number Theory. The term for comparing remainders of two integers is called?

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Equivalence Relation

CONGRUENCE mod m is an?

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Congruence

Let m be a positive integer. Two integers a and b are congruent modulo m if they each have the same remainder on division by m. If this is so, then we write:

a b (mod m)

Such a statement is called a?

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Equivalence Relation

CONGRUENCE mod m is an?

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Reflexive Property

PROPERTY: a a (mod m)

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Symmetric Property

PROPERTY: If a ≡ b (mod m), then b ≡ a (mod m).

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Transitive Property

PROPERTY: If a ≡ b (mod m)

and b ≡ c (mod m), then a ≡ c (mod m).