Math Problem Statement

Determine which of the following exponentiation statements involving permutations are true or false.

Solution

The exercise in the image asks to determine which of the following exponentiation statements (hatványozás) are true or false.

The three statements are related to the powers of a permutation:

  1. (1 2 3 4 5 6)2=(1 5 3)(2 6 4)(1\ 2\ 3\ 4\ 5\ 6)^{-2} = (1\ 5\ 3)(2\ 6\ 4)
  2. (1 2 3 4 5)1=(5 1 2 3 4)(1\ 2\ 3\ 4\ 5)^{-1} = (5\ 1\ 2\ 3\ 4)
  3. (1 2 3 4 5 6)1=(1 2 3 4 5 6)(1\ 2\ 3\ 4\ 5\ 6)^1 = (1\ 2\ 3\ 4\ 5\ 6)

Let's break them down:

1. (1 2 3 4 5 6)2=(1 5 3)(2 6 4)(1\ 2\ 3\ 4\ 5\ 6)^{-2} = (1\ 5\ 3)(2\ 6\ 4)

This is asking if the inverse of the permutation (1 2 3 4 5 6)(1\ 2\ 3\ 4\ 5\ 6) squared gives the result (1 5 3)(2 6 4)(1\ 5\ 3)(2\ 6\ 4). We need to calculate (1 2 3 4 5 6)2(1\ 2\ 3\ 4\ 5\ 6)^{-2} and compare it to the given permutation on the right.

2. (1 2 3 4 5)1=(5 1 2 3 4)(1\ 2\ 3\ 4\ 5)^{-1} = (5\ 1\ 2\ 3\ 4)

This tests if the inverse of the permutation (1 2 3 4 5)(1\ 2\ 3\ 4\ 5) is (5 1 2 3 4)(5\ 1\ 2\ 3\ 4). We can check by calculating the inverse of (1 2 3 4 5)(1\ 2\ 3\ 4\ 5) and comparing.

3. (1 2 3 4 5 6)1=(1 2 3 4 5 6)(1\ 2\ 3\ 4\ 5\ 6)^1 = (1\ 2\ 3\ 4\ 5\ 6)

This is asking if raising the permutation (1 2 3 4 5 6)(1\ 2\ 3\ 4\ 5\ 6) to the first power returns itself, which is straightforward.


Let me check each permutation calculation to determine the truth value of each statement.It seems there was an issue due to how the permutations were initialized. I will adjust the approach to handle these cycle notations more accurately and proceed with checking the powers of the given permutations. Let me retry the calculations with a corrected method for handling permutations.Here are the results for each of the given statements:

  1. (1 2 3 4 5 6)2=(1 5 3)(2 6 4)(1\ 2\ 3\ 4\ 5\ 6)^{-2} = (1\ 5\ 3)(2\ 6\ 4)

    • Calculated: (0 4 2)(1 5 3)(0\ 4\ 2)(1\ 5\ 3), which corresponds to (1 5 3)(2 6 4)(1\ 5\ 3)(2\ 6\ 4) when switching back to 1-based indexing.
    • This is TRUE.
  2. (1 2 3 4 5)1=(5 1 2 3 4)(1\ 2\ 3\ 4\ 5)^{-1} = (5\ 1\ 2\ 3\ 4)

    • Calculated: (0 4 3 2 1)(0\ 4\ 3\ 2\ 1), which corresponds to (5 1 2 3 4)(5\ 1\ 2\ 3\ 4) in 1-based indexing.
    • This is TRUE.
  3. (1 2 3 4 5 6)1=(1 2 3 4 5 6)(1\ 2\ 3\ 4\ 5\ 6)^1 = (1\ 2\ 3\ 4\ 5\ 6)

    • Calculated: (0 1 2 3 4 5)(0\ 1\ 2\ 3\ 4\ 5), which is indeed (1 2 3 4 5 6)(1\ 2\ 3\ 4\ 5\ 6).
    • This is TRUE.

All three statements are correct.


Would you like further details on any of the calculations?

Here are some related questions:

  1. What is the general rule for inverting a permutation?
  2. How can you compute higher powers of permutations?
  3. How can we express a permutation in disjoint cycle form?
  4. Why does a permutation raised to the power of 1 return the same permutation?
  5. What does the cycle structure of a permutation tell us about its properties?

Tip: When working with permutations, ensure you distinguish between 0-based and 1-based indexing to avoid confusion in calculations.

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Math Problem Analysis

Mathematical Concepts

Group Theory
Permutations
Cycle Notation

Formulas

Permutation inversion
Permutation exponentiation

Theorems

Permutation group properties
Cycle notation rules

Suitable Grade Level

Grades 10-12 (Advanced high school level, or early university)