K Gc 7¥31 - University of California,...

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Coordinatizing 2/26/2019 Choosing a basis B = Ebb , bn } Isomorphism B :lRdimV- V - , T : VFW bijective 4 he x. bit - . - txnbi E.ge 1B = { axkbxtclasb.cc IR } B = { K2 , K , 13 B : 1123 Pa via [ I ] It ax 't bxtc , x4xt2 word a ]B=[ I ] V= Col [ If ] = { ( § ] I a. BER } 13={11%1,193} B : R' V via Cab ] It all ]tb[ 7) = [ § ] Deth CoordinatesofvEVwlrHB# : 043=1%41 stv-x.be - - t Kati ( i.e B- ' Cv ) in the map B 112dm V above ) Matrix of a linear map - T : V W linear Let BIC be a basis of VIN . IT ]B is a matrix such that the V , have IT ]BHB = ( Tbc Fact IT ] , = 4Th ]c - [ Tbn ] ) E.g T : Bz Pa , pox , ( Gc - Dpw ) ' K ' t 3×2 - 2x Take B=C= Ex ; x , 13 K IT 2x - I ° o 7 1-7 y IT IB = 7¥31 o , " ) Check TCx4xt2 ) = ( CKD Gated ) ' = ( 23+2-2 ) ' [1%4111]=1 ? ] , = 30041

Transcript of K Gc 7¥31 - University of California,...

Page 1: K Gc 7¥31 - University of California, Berkeleyceur/course_pages/coursepdf/M54S19Notes10.pdf043=1%41stv-x.be-- - t Kati (i.e.. B-' Cv) in the map B--112dm V above) Matrix of a linear-map

Coordinatizing 2/26/2019

→ →

Choosing a basis B = Ebb . .

,bn } ← Isomorphism B :lRdimV- V

- ,

T : VFW bijective 4he x. bit - . - txnbi

E.ge ① 1B = { axkbxtclasb.cc IR }.

B = { K2,

K, 13

.

B : 1123 → Pa via [ I ] It ax 't bxtc,

x4xt2 word.

a ]B=[ I ]② V= Col [ If ] = { ( § ] I a. BER }

.

13={11%1,193}B : R' → V via Cab ] It all ]tb[ 7) = [ § ]

Deth CoordinatesofvEVwlrHB# :

043=1%41stv-x.be- - - t Kati

.( i.e. B- ' Cv ) in the

map B -

-112dm V above )

Matrix of a linearmap-

T : V → W linear.

Let BICbe a basis of VIN.

IT]Bis a matrix such that the V,

have

IT]BHB = (Tbc.

Fact IT ],

=

4Th]c - - - [Tbn])E.g T : Bz → Pa

, pox , ↳ (

Gc- Dpw )

'K

'

t 3×2 - 2x

Take B=C= Ex ; x, 13

.

K IT 2x - I

° o7 1-7 yITIB = 7¥31o

,

"

) . Check TCx4xt2 ) = ( CKD Gated )'

= ( 23+2-2 )'

[1%4111]=1 ?] ← 3¥ ,.

= 30041