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Househbolder transformation identity matrix dimensions


Least-squares solution to a transformation between coordinate frames“Averaging” transformation matrices?Using Least Squares to calculate a matrix in an equation.Least squares with matrix solution with constraintsHow to expand the matrix in Matlab (forming $A$ matrix in least square problem)Minimize $|AXBd -c |^2$, enforcing $X$ to be a diagonal block matrixMinimizing a transformation describing the configuration of a rigid body with respect to its verticesProper way to use projection matrix equationAre there any cases where Modified Gram-Schmidt is more reliable than Householder for QR decomposition?Solve Matrix Least Squares (Frobenius Norm) Problem with Lower Triangular Matrix Constraint













0












$begingroup$


When performing a householder transformation and generating an elementary reflector matrix of the form:



$$H = I - 2dfracvv^Tv^Tv$$



How do we know the dimensions of the identity matrix?










share|cite|improve this question









$endgroup$
















    0












    $begingroup$


    When performing a householder transformation and generating an elementary reflector matrix of the form:



    $$H = I - 2dfracvv^Tv^Tv$$



    How do we know the dimensions of the identity matrix?










    share|cite|improve this question









    $endgroup$














      0












      0








      0





      $begingroup$


      When performing a householder transformation and generating an elementary reflector matrix of the form:



      $$H = I - 2dfracvv^Tv^Tv$$



      How do we know the dimensions of the identity matrix?










      share|cite|improve this question









      $endgroup$




      When performing a householder transformation and generating an elementary reflector matrix of the form:



      $$H = I - 2dfracvv^Tv^Tv$$



      How do we know the dimensions of the identity matrix?







      least-squares






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Mar 10 at 21:02









      ParadoxParadox

      205110




      205110




















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          $begingroup$

          Let $nin mathbb N$ such that $v in mathbb R^n$. Then $vv^t in mathbb R^ntimes n$ and we therefore need $I in mathbb R^ntimes n$ for the difference to make sense.






          share|cite|improve this answer









          $endgroup$












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            1












            $begingroup$

            Let $nin mathbb N$ such that $v in mathbb R^n$. Then $vv^t in mathbb R^ntimes n$ and we therefore need $I in mathbb R^ntimes n$ for the difference to make sense.






            share|cite|improve this answer









            $endgroup$

















              1












              $begingroup$

              Let $nin mathbb N$ such that $v in mathbb R^n$. Then $vv^t in mathbb R^ntimes n$ and we therefore need $I in mathbb R^ntimes n$ for the difference to make sense.






              share|cite|improve this answer









              $endgroup$















                1












                1








                1





                $begingroup$

                Let $nin mathbb N$ such that $v in mathbb R^n$. Then $vv^t in mathbb R^ntimes n$ and we therefore need $I in mathbb R^ntimes n$ for the difference to make sense.






                share|cite|improve this answer









                $endgroup$



                Let $nin mathbb N$ such that $v in mathbb R^n$. Then $vv^t in mathbb R^ntimes n$ and we therefore need $I in mathbb R^ntimes n$ for the difference to make sense.







                share|cite|improve this answer












                share|cite|improve this answer



                share|cite|improve this answer










                answered Mar 10 at 21:13









                flawrflawr

                11.7k32546




                11.7k32546



























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