be such that Ca,m)=1, Let thE N and a,be Z Cb ,m) = ), and Cab, m)=\. Let j= Om Ca); k= Om(b) and n= Om Cab), Suppose that (j,k) =d >I, for (abi %3D so Jこdr ksds some Prove that nI rds then show that Om Cab) < OmCa) Om (b).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Topic Video
Question

Second picture is just theorems 

be such that Ca,m)=1,
Let thE N and a,be Z
Cb ,m) = ), and Cab, m)=\. Let j= Om Ca);
k= Om(b) and n= Om Cab), Suppose that
(j,k) =d >I,
for
(abi
%3D
so
Jこdr
ksds
some
Prove that
nI rds
then show
that Om Cab) < OmCa) Om (b).
Transcribed Image Text:be such that Ca,m)=1, Let thE N and a,be Z Cb ,m) = ), and Cab, m)=\. Let j= Om Ca); k= Om(b) and n= Om Cab), Suppose that (j,k) =d >I, for (abi %3D so Jこdr ksds some Prove that nI rds then show that Om Cab) < OmCa) Om (b).
Theorem 1 (Fermat's Little Theorem). Let p be prime. If pła, then aP-l =1 (mod p).
Corollary 2. Let p be a prime. Then for any integer a we have aP = a (mod p).
Theorem 3 (Wilson's Theorem). If p is a prime, then (p – 1)! = -1 (mod p).
Theorem 4. Let a, b e Z and m, k E N. If a = b (mod m) and k| m, then a = b (mod k).
Theorem 5 (Cancellation). Let m > 1. If (a, m)
= 1 and ab = ac (mod m), then b = c (mod m).
Theorem 6. Consider the linear congruence equation
ax = b (mod m)
(1)
in the unknown x. Let d = (a, m). Then equation (1) has solutions if and only if d b. Moreover,
if d|b, then the solution to (1) is unique (mod m) and if d > 1, then equation (1) has exactly d
incongruent solutions (mod m).
Corollary 7. Consider the congruence equation ax = b (mod m). If (a, m) = 1, then this equation
has a solution and it is unique (mod m).
= 1. The order (mod m) of a,
Definition 8. Let m e N and let a e Z be such that (a, m)
denoted by om(a), is the least d e N such that ad = 1 (mod m); that is, om(a) = d if and only if
1. ad = 1 (mod m), and
2. a' # 1 (mod m) for all i e N such that i < d.
= 1. Let n be a natural number. Then
Theorem 9. Let m e N and let a E Z be such that (a, m)
a" = 1 (mod m) if and only if om(a) | n.
Theorem 10. Let a, b, n e Z. If n and a are relatively prime and n (ab), then n b.
Theorem 11. Let a, b, n be integers where a n and b|n. If (a, b) = 1, then (ab) | n.
Lemma 12. Let a and b be natural numbers and let p be a prime. If p|(ab), then p |a or p|b.
Corollary 13. Let a be a natural number and p be a prime. If p|a?, then p|a.
Definition 14. A function f: N → N is said to be multiplicative if for all pairs of relatively
prime natural numbers m and n, we have that f(m · n) = f(m) · f(n).
Lemma 15. Let p be an odd prime number and let a, b e Z be such that pła and płb. Then
(1) )
(2) If a = b (mod p), then (4) = (9).
= 1.
(3) ()
(4) )
= 1.
Theorem 16. Let p be an odd prime number. Then
(금) -
(1,
1-1, if p = 3 (mod 4).
if p = 1 (mod 4);
=(-1)
Theorem 17. Let p be an odd prime number. Then
if p = 1,7 (mod 8);
–1, if p = 3, 5 (mod 8).
1,
=
Theorem 18 (Quadratic Reciprocity Law). Let p and q be distinct odd primes. Then
S1,
(29 -(-1)5-{1, if p=q = 3 (mod 4).
if p = 1 (mod 4) or q = 1 (mod 4);
%3D
Corollary 19. Let p and q be distinct odd primes. If p = 1 (mod 4) or q = 1 (mod 4), then
(E) ) = 1 and thus, (2) = (3). If p = q = 3 (mod 4), then () ()
-().
= -1 and thus, (2)
Transcribed Image Text:Theorem 1 (Fermat's Little Theorem). Let p be prime. If pła, then aP-l =1 (mod p). Corollary 2. Let p be a prime. Then for any integer a we have aP = a (mod p). Theorem 3 (Wilson's Theorem). If p is a prime, then (p – 1)! = -1 (mod p). Theorem 4. Let a, b e Z and m, k E N. If a = b (mod m) and k| m, then a = b (mod k). Theorem 5 (Cancellation). Let m > 1. If (a, m) = 1 and ab = ac (mod m), then b = c (mod m). Theorem 6. Consider the linear congruence equation ax = b (mod m) (1) in the unknown x. Let d = (a, m). Then equation (1) has solutions if and only if d b. Moreover, if d|b, then the solution to (1) is unique (mod m) and if d > 1, then equation (1) has exactly d incongruent solutions (mod m). Corollary 7. Consider the congruence equation ax = b (mod m). If (a, m) = 1, then this equation has a solution and it is unique (mod m). = 1. The order (mod m) of a, Definition 8. Let m e N and let a e Z be such that (a, m) denoted by om(a), is the least d e N such that ad = 1 (mod m); that is, om(a) = d if and only if 1. ad = 1 (mod m), and 2. a' # 1 (mod m) for all i e N such that i < d. = 1. Let n be a natural number. Then Theorem 9. Let m e N and let a E Z be such that (a, m) a" = 1 (mod m) if and only if om(a) | n. Theorem 10. Let a, b, n e Z. If n and a are relatively prime and n (ab), then n b. Theorem 11. Let a, b, n be integers where a n and b|n. If (a, b) = 1, then (ab) | n. Lemma 12. Let a and b be natural numbers and let p be a prime. If p|(ab), then p |a or p|b. Corollary 13. Let a be a natural number and p be a prime. If p|a?, then p|a. Definition 14. A function f: N → N is said to be multiplicative if for all pairs of relatively prime natural numbers m and n, we have that f(m · n) = f(m) · f(n). Lemma 15. Let p be an odd prime number and let a, b e Z be such that pła and płb. Then (1) ) (2) If a = b (mod p), then (4) = (9). = 1. (3) () (4) ) = 1. Theorem 16. Let p be an odd prime number. Then (금) - (1, 1-1, if p = 3 (mod 4). if p = 1 (mod 4); =(-1) Theorem 17. Let p be an odd prime number. Then if p = 1,7 (mod 8); –1, if p = 3, 5 (mod 8). 1, = Theorem 18 (Quadratic Reciprocity Law). Let p and q be distinct odd primes. Then S1, (29 -(-1)5-{1, if p=q = 3 (mod 4). if p = 1 (mod 4) or q = 1 (mod 4); %3D Corollary 19. Let p and q be distinct odd primes. If p = 1 (mod 4) or q = 1 (mod 4), then (E) ) = 1 and thus, (2) = (3). If p = q = 3 (mod 4), then () () -(). = -1 and thus, (2)
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Propositional Calculus
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,