Compute Inversion of (143) Cycle

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    Cycle Inversion
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Homework Help Overview

The problem involves finding the inversion of the cycle notation (143) in the context of permutations.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants discuss the definition of the cycle (143) and its effects on the elements 1, 3, and 4. Questions are raised about how to determine what the inversion would do to these elements.

Discussion Status

Some participants have offered guidance by suggesting a return to the definition of the cycle and considering its action on the elements involved. There is an exploration of how to express the cycle in a two-row form for inversion.

Contextual Notes

Participants express uncertainty about the inversion process and share personal experiences with similar problems, indicating a need for clarification on this specific case.

rayman123
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Homework Statement


Find an inversion of the following cycle
(143)


Homework Equations


(143)^{-1}



The Attempt at a Solution



Could someone show me how do we compute this?
 
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hi rayman123! :smile:

just go back to the definition of (143) …

what does (143) do to 1?
what does (143) do to 3?
what does (143) do to 4?

now what would its inversion do to 1, to 3, and to 4? :wink:
 
tiny-tim said:
hi rayman123! :smile:

just go back to the definition of (143) …

what does (143) do to 1?
what does (143) do to 3?
what does (143) do to 4?
I guess 1 is being moved to 4
4 goes to 3
and 3 goes to 1

now what would its inversion do to 1, to 3, and to 4? :wink:
I do not know...:(

I know how to find an inversion for something like that for example
\left( {\begin{array}{cc}<br /> 123 \\<br /> 231 \\<br /> \end{array} } \right)^{-1}=\left( {\begin{array}{cc}<br /> 231 \\<br /> 123 \\<br /> \end{array} } \right)=\left( {\begin{array}{cc}<br /> 123 \\<br /> 312 \\<br /> \end{array} } \right)
 
ok, then write (143) in that two-row form, and then invert it :wink:
 

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