
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Input : a permutation group G;
a base and strong generating set for G;
the Schreier
Output : the base images of the elements of the group G (without repetition);
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- In pythion with numpy I have code in a for loop that creates a vecor of 12 elements:x = 1 2 3 4 5 6 7 8 9 10 11 12 The loop iterates 10 times. The second iteration generates a new vector x = 12 11 10 9 8 7 6 5 4 3 2 1 etc. At the end of the loop I need to have a 12 X 10 matrix x x x x x x x x x x x x x x x x x x x xx x x x x x x x x x x x x x x x x x x xx x x x x x x x x x x x x x x x x x x xx x x x x x x x x x x x x x x x x x x xx x x x x x x x x x x x x x x x x x x xx x x x x x x x x x x x x x x x x x x x I cannot figure out how to createa matrix where it takes the output and uses the output as rowarrow_forwardAlgorithm for Testing MembershipInput : a group G acting on f~ = { 1,2 ..... n };a permutation g of f~ = { 1,2 ..... n };a base and strong ~enerating set for G;Schreier vectors v (i) , 1 < i < k, for the stabiliser chain;Output: a boolean value answer, indicating whether g ~ G;function is_in_group(p : permutation; i : 1..k+l ) : boolean;(* return true if the permutation p is in the group G (i) *)arrow_forward1. Implement a helper function called rref pp (A, b) that applies Gaussian Elimination with partial pivoting to return the Reduced-Row Echelon Form of the augmented matrix formed from Matrix object A and Vec object b. The output must be of the type Matrix. 2. Implement the function solve pp(A, b) that uses rref pp (A, b) to solve the system A = b. The input A is of the type Matrix and b is of the type vec. o If the system has a unique solution, it returns the solution as a Vec object. o If the system has no solution, it returns None. o If the system has infinitely many solutions, it returns the number of free variables (int) in the solution. def _rref_pp(A, b): # todo pass def solve_pp(A, b): #todo pass Pythonarrow_forward
- Find an expression for the indicated set, involving A,B,C, and any of the operations ∪, ∩, - (subtraction), and ' (complement): {x | x is an element of exactly one of the three sets A, B, and C}arrow_forwardAlgorithm Element as a Strong Generator ProductInput: a group G operating on f = 1,2,.....n; an element g of G; a base and strong generating set for G; Schreier vectors v I 1 I k, for the stabiliser chainOutput: a symbolic product, a word that expresses g in terms of the strong generators.arrow_forwardSuppose we have a two-dimensional vector [ U₁ U₂]. Select all the translations that would occur on the vector from the operation [ u₁, U2 ]-[-7, -5] 2 O Shift up Shift down Shift right Shift left O No horizontal shift No vertical shiftarrow_forward
- Algorithm to Enumerating All Base ImagesInput : a permutation group G;a base and strong generating set for G;the Schreier vectors v (i) , 1 < i < k, of the stabiliser chain;arrow_forwardAlgorithm to Determining an orbit and Schreier vectorInput : a set S = {s 1, s2 ..... Sm} of generators of a group G acting on f2; a point 5;Output : the orbit ~G; a Schreier vector v and backward pointers w of the orbit 8 G relative to the set S of generators;arrow_forwardDefine a numpy array representing the matrix and assign it to the variable B. 7 -6 −1 11 5 -6 -12 14 -8 8 B = -1 14 7 11 -8 12 5 8 8 -1 = 8 26 1 12 8 -1 -5 Furthermore, determine the eigenvector of this matrix with the eigenvalue closest to zero and assign it to the variable special_evec.arrow_forward
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