negate: (b) There exists a composite number n such p-11 (mod n) whenever p is a prime that doesn't divide n. (Recall that a natural number is called composite if it is not prime.) (c) For ever...
Recall that an integer >1 is called a prime when its only strictly positive factors are 1 and r. An integer > 1 is called composite when it's not a primec. (a) Show that a composite integer 2 < x < 150 must be a multiple of 2, 3, 5, 7, or 11 (b) Use the Sieve Method and a table with 15 rows and 10 columns to determine all primes between 2 and 150. (c) What's the largest prime...
10. A natural number n is called attainable if there exists non-negative integers a and b such that n - 5a + 8b. Otherwise, n is called unattainable. Construct an 9 x 6 matrix whose rows are indexed by the integers between 0 and 8 and whose columns are indexed by the integers between 0 and 5 whose (x, y)-th entry equals 5x + 8y for any 0 < r < 8 and (a) Mark down all the attainable numbers...
13. (i) For each of the following equations, find all the natural numbers n that satisfy it (a) φ(n)-4 (b) o(n) 6 (c) ф(n) 8 (d) φ(n) = 10 (ii) Prove or disprove: (a) For every natural number k, there are only finitely many natural num- bers n such that ф(n)-k (b) For every integer n > 2, there are at least two distinction integers that are invertible modulo n (c) For every integers a, b,n with n > 1...
22.M. If c>0 and n is a natural number, there exists a unique positive number b such that b" = c.
please prove proofs and do 7.4 7.2 Theorem. Let p be a prime, and let b and e be integers. Then there exists a linear change of variahle, yx+ with a an integer truns- farming the congruence xbx e0 (mod p) into a congruence of the farm y (mod p) for some integer 8 Our goal is to understand which integers are perfect squares of other inte- gers modulo a prime p. The first theorem below tells us that half...
Number theory: Part C and Part D please! QUADRA range's Four-Square Theorem) If n is a natural be expressed as the sum of four squares. insmber, then n cam be expressed tice Λ in 4-space is a set of the form t(x,y, z, w). M:x,y,z, w Z) matrix of nonzero determinant. The covolume re M is a 4-by-4 no is defined to be the absolute value of Det M such a lattice, of covolume V, and let S be the...
1. (Induction.) Consider the following program, called Ackbar(m,n). It takes in as input any two natural numbers m, n, and does the following: (i) If m-0, Ackbar(0, n) = n + 1. (ii) If n-0, Ackbar(rn,0) is equal to Ackbar(m-1, 1). iii) Otherwise, if n, m > 0, then Ackbar(m, n) can be found by calculating Ackbar(m - 1, Ackbar(m,n 1)) Here's a handful of calculations to illustrate this definition: Ackbar(1,0)-Ackbar(0,1) = 1 + 1-2 Ackbar (1, 1) Ackbar (0,...
Please prove the 3 theorems, thank you! 7.6 Theorem. Let p be a prime. Then half the numbers not congruent to 0 modulo p in any complete nesidue system modulo p are quadratic residuess modulo p and half are quadratic non-residues modulo p. From clementary school days, we have known that the product of a pos- itive number and a positive number is positive, a positive times a negative is negative, and the product of two negative numbers is positive....
Prove the Binomial Theorem, that is Exercises 173 (vi) x+y y for all n e N C) Recall that for all 0rS L is divisible by 8 when n is an odd natural number vii))Show that 2 (vin) Prove Leibniz's Theorem for repeated differentiation of a product: If ande are functions of x, then prove that d (uv) d + +Mat0 for all n e N, where u, and d'a d/v and dy da respectively denote (You will need to...
I have to use the following theorems to determine whether or not it is possible for the given orders to be simple. Theorem 1: |G|=1 or prime, then it is simple. Theorem 2: If |G| = (2 times an odd integer), the G is not simple. Theorem 3: n is an element of positive integers, n is not prime, p is prime, and p|n. If 1 is the only divisor of n that is congruent to 1 (mod p) then...