The defining matrix of a symplectic matrix











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Just a beginner in symplectic geometry, and the definition of symplectic matrix bothers me.
A $2ntimes 2n$ real matrix $M$ is said to be symplectic if it satisfies the following condition:
$$M^TOmega M=Omega$$
where $Omega$ is a fixed $2ntimes 2n$ real, invertible and skew-symmetric matrix.



My question is: since $Omega$ can be arbitrary, so if $Omega,Delta$ are both satisfy the condition, then the following statement must be true:
$$M^TOmega M=Omega Rightarrow M^TDelta M=Delta.$$



But I don't know how to prove this. Can anyone help me? Thanks.










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    Just a beginner in symplectic geometry, and the definition of symplectic matrix bothers me.
    A $2ntimes 2n$ real matrix $M$ is said to be symplectic if it satisfies the following condition:
    $$M^TOmega M=Omega$$
    where $Omega$ is a fixed $2ntimes 2n$ real, invertible and skew-symmetric matrix.



    My question is: since $Omega$ can be arbitrary, so if $Omega,Delta$ are both satisfy the condition, then the following statement must be true:
    $$M^TOmega M=Omega Rightarrow M^TDelta M=Delta.$$



    But I don't know how to prove this. Can anyone help me? Thanks.










    share|cite|improve this question







    New contributor




    Arc Walker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Just a beginner in symplectic geometry, and the definition of symplectic matrix bothers me.
      A $2ntimes 2n$ real matrix $M$ is said to be symplectic if it satisfies the following condition:
      $$M^TOmega M=Omega$$
      where $Omega$ is a fixed $2ntimes 2n$ real, invertible and skew-symmetric matrix.



      My question is: since $Omega$ can be arbitrary, so if $Omega,Delta$ are both satisfy the condition, then the following statement must be true:
      $$M^TOmega M=Omega Rightarrow M^TDelta M=Delta.$$



      But I don't know how to prove this. Can anyone help me? Thanks.










      share|cite|improve this question







      New contributor




      Arc Walker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      Just a beginner in symplectic geometry, and the definition of symplectic matrix bothers me.
      A $2ntimes 2n$ real matrix $M$ is said to be symplectic if it satisfies the following condition:
      $$M^TOmega M=Omega$$
      where $Omega$ is a fixed $2ntimes 2n$ real, invertible and skew-symmetric matrix.



      My question is: since $Omega$ can be arbitrary, so if $Omega,Delta$ are both satisfy the condition, then the following statement must be true:
      $$M^TOmega M=Omega Rightarrow M^TDelta M=Delta.$$



      But I don't know how to prove this. Can anyone help me? Thanks.







      linear-algebra symplectic-geometry symplectic-linear-algebra






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      Arc Walker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked Nov 15 at 9:30









      Arc Walker

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          There are more than one symplectic structure oon a vector space, but they are isomorphic not equal, there exists a linear invertible map such that $fcircDelta =Omegacirc f$ where $Omega$ and $Delta$ are the linear map associated to the corresponding matrices.






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            There are more than one symplectic structure oon a vector space, but they are isomorphic not equal, there exists a linear invertible map such that $fcircDelta =Omegacirc f$ where $Omega$ and $Delta$ are the linear map associated to the corresponding matrices.






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              There are more than one symplectic structure oon a vector space, but they are isomorphic not equal, there exists a linear invertible map such that $fcircDelta =Omegacirc f$ where $Omega$ and $Delta$ are the linear map associated to the corresponding matrices.






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                up vote
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                down vote









                There are more than one symplectic structure oon a vector space, but they are isomorphic not equal, there exists a linear invertible map such that $fcircDelta =Omegacirc f$ where $Omega$ and $Delta$ are the linear map associated to the corresponding matrices.






                share|cite|improve this answer












                There are more than one symplectic structure oon a vector space, but they are isomorphic not equal, there exists a linear invertible map such that $fcircDelta =Omegacirc f$ where $Omega$ and $Delta$ are the linear map associated to the corresponding matrices.







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                answered Nov 15 at 9:33









                Tsemo Aristide

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