Number Theory, Part 2

Number theory terminology relating to 2.1, 2.2, 2.3, 2.4 of "Elementary Number Theory," by James Strayer.
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supersploder19
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Last updated: May 14, 2024
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First submittedMay 14, 2024
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Hint
Answer
If two integers differ from each other by a multiple of some integer m, we say they are ______ modulo m
Congruent
The set of all integers x such that x = b (mod m), denoted by [b], is referred to as a ________ class?
Congruence
The above is an example of a _________ class.
Equivalence
What is the term for a set of integers, S, such that every integer that exists is congruent modulo m to some integer in S.
Complete residue system modulo m
What is the term for a set of integers, S, such that every integer that exists that is relatively prime to m is congruent to some integer in S?
Reduced residue system modulo m
Let b and c be integers. If bc is congruent to 1 modulo m, what is the term for this multiplicative relationship that b has to c?
Inverse modulo m
Hint
Answer
Integer b has an inverse modulo m precisely when b and m are ____ ____. (2 word answer)
relatively prime
What is the name of the following type of problem: Find x such that a*x is congruent to b modulo m? (where a, b, and m are known integers, and x is the unknown you are trying to solve for)
Linear congruence
The linear congruence ax = b (mod m) has a solution when gcd(?, ?) divides b. Enter your answers separated by a comma.
a,m
The solutions to linear congruence ax = b (mod m) are separated by multiples of what number, where d = gcd(a, m). Write your answer as a fraction like this: x/y
m/d
Name the theorem: A system of n linear congruences in one variable x has a solution, if and only if all of the moduli are pairwise relatively prime
Chinese remainder theorem
Name the theorem: An integer p is prime if and only if (p-1)! is congruent to (p - 1) modulo p. (Example: (5-1)! = 24 is congruent to (5 -1) = 4 modulo 5).
Wilson's Theorem
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4 Comments
+2
Level 78
May 14, 2024
I presume you're taking a number theory class at university?
+1
Level 53
May 15, 2024
Yep! Trying to keep track of things as I go.
+2
Level 78
May 17, 2024
May I ask what you're studying? I'm a math student myself
+2
Level 53
May 19, 2024
Neat, I'm actually a math major too!