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Type | Label | Description |
---|---|---|
Statement | ||
Theorem | nmfnrepnf 31401 | The norm of a Hilbert space functional is either real or plus infinity. (Contributed by NM, 8-Dec-2007.) (New usage is discouraged.) |
β’ (π: ββΆβ β ((normfnβπ) β β β (normfnβπ) β +β)) | ||
Theorem | nlfnval 31402 | Value of the null space of a Hilbert space functional. (Contributed by NM, 11-Feb-2006.) (New usage is discouraged.) |
β’ (π: ββΆβ β (nullβπ) = (β‘π β {0})) | ||
Theorem | elcnfn 31403* | Property defining a continuous functional. (Contributed by NM, 11-Feb-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ (π β ContFn β (π: ββΆβ β§ βπ₯ β β βπ¦ β β+ βπ§ β β+ βπ€ β β ((normββ(π€ ββ π₯)) < π§ β (absβ((πβπ€) β (πβπ₯))) < π¦))) | ||
Theorem | ellnfn 31404* | Property defining a linear functional. (Contributed by NM, 11-Feb-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ (π β LinFn β (π: ββΆβ β§ βπ₯ β β βπ¦ β β βπ§ β β (πβ((π₯ Β·β π¦) +β π§)) = ((π₯ Β· (πβπ¦)) + (πβπ§)))) | ||
Theorem | lnfnf 31405 | A linear Hilbert space functional is a functional. (Contributed by NM, 25-Apr-2006.) (New usage is discouraged.) |
β’ (π β LinFn β π: ββΆβ) | ||
Theorem | dfadj2 31406* | Alternate definition of the adjoint of a Hilbert space operator. (Contributed by NM, 20-Feb-2006.) (New usage is discouraged.) |
β’ adjβ = {β¨π‘, π’β© β£ (π‘: ββΆ β β§ π’: ββΆ β β§ βπ₯ β β βπ¦ β β (π₯ Β·ih (π‘βπ¦)) = ((π’βπ₯) Β·ih π¦))} | ||
Theorem | funadj 31407 | Functionality of the adjoint function. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ Fun adjβ | ||
Theorem | dmadjss 31408 | The domain of the adjoint function is a subset of the maps from β to β. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ dom adjβ β ( β βm β) | ||
Theorem | dmadjop 31409 | A member of the domain of the adjoint function is a Hilbert space operator. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ (π β dom adjβ β π: ββΆ β) | ||
Theorem | adjeu 31410* | Elementhood in the domain of the adjoint function. (Contributed by Mario Carneiro, 11-Sep-2015.) (Revised by Mario Carneiro, 24-Dec-2016.) (New usage is discouraged.) |
β’ (π: ββΆ β β (π β dom adjβ β β!π’ β ( β βm β)βπ₯ β β βπ¦ β β (π₯ Β·ih (πβπ¦)) = ((π’βπ₯) Β·ih π¦))) | ||
Theorem | adjval 31411* | Value of the adjoint function for π in the domain of adjβ. (Contributed by NM, 19-Feb-2006.) (Revised by Mario Carneiro, 24-Dec-2016.) (New usage is discouraged.) |
β’ (π β dom adjβ β (adjββπ) = (β©π’ β ( β βm β)βπ₯ β β βπ¦ β β (π₯ Β·ih (πβπ¦)) = ((π’βπ₯) Β·ih π¦))) | ||
Theorem | adjval2 31412* | Value of the adjoint function. (Contributed by NM, 19-Feb-2006.) (New usage is discouraged.) |
β’ (π β dom adjβ β (adjββπ) = (β©π’ β ( β βm β)βπ₯ β β βπ¦ β β ((πβπ₯) Β·ih π¦) = (π₯ Β·ih (π’βπ¦)))) | ||
Theorem | cnvadj 31413 | The adjoint function equals its converse. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ β‘adjβ = adjβ | ||
Theorem | funcnvadj 31414 | The converse of the adjoint function is a function. (Contributed by NM, 25-Jan-2006.) (New usage is discouraged.) |
β’ Fun β‘adjβ | ||
Theorem | adj1o 31415 | The adjoint function maps one-to-one onto its domain. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ adjβ:dom adjββ1-1-ontoβdom adjβ | ||
Theorem | dmadjrn 31416 | The adjoint of an operator belongs to the adjoint function's domain. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ (π β dom adjβ β (adjββπ) β dom adjβ) | ||
Theorem | eigvecval 31417* | The set of eigenvectors of a Hilbert space operator. (Contributed by NM, 11-Mar-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ (π: ββΆ β β (eigvecβπ) = {π₯ β ( β β 0β) β£ βπ¦ β β (πβπ₯) = (π¦ Β·β π₯)}) | ||
Theorem | eigvalfval 31418* | The eigenvalues of eigenvectors of a Hilbert space operator. (Contributed by NM, 11-Mar-2006.) (New usage is discouraged.) |
β’ (π: ββΆ β β (eigvalβπ) = (π₯ β (eigvecβπ) β¦ (((πβπ₯) Β·ih π₯) / ((normββπ₯)β2)))) | ||
Theorem | specval 31419* | The value of the spectrum of an operator. (Contributed by NM, 11-Apr-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ (π: ββΆ β β (Lambdaβπ) = {π₯ β β β£ Β¬ (π βop (π₯ Β·op ( I βΎ β))): ββ1-1β β}) | ||
Theorem | speccl 31420 | The spectrum of an operator is a set of complex numbers. (Contributed by NM, 11-Apr-2006.) (New usage is discouraged.) |
β’ (π: ββΆ β β (Lambdaβπ) β β) | ||
Theorem | hhlnoi 31421 | The linear operators of Hilbert space. (Contributed by NM, 19-Nov-2007.) (Revised by Mario Carneiro, 19-Nov-2013.) (New usage is discouraged.) |
β’ π = β¨β¨ +β , Β·β β©, normββ© & β’ πΏ = (π LnOp π) β β’ LinOp = πΏ | ||
Theorem | hhnmoi 31422 | The norm of an operator in Hilbert space. (Contributed by NM, 19-Nov-2007.) (Revised by Mario Carneiro, 17-Nov-2013.) (New usage is discouraged.) |
β’ π = β¨β¨ +β , Β·β β©, normββ© & β’ π = (π normOpOLD π) β β’ normop = π | ||
Theorem | hhbloi 31423 | A bounded linear operator in Hilbert space. (Contributed by NM, 19-Nov-2007.) (Revised by Mario Carneiro, 19-Nov-2013.) (New usage is discouraged.) |
β’ π = β¨β¨ +β , Β·β β©, normββ© & β’ π΅ = (π BLnOp π) β β’ BndLinOp = π΅ | ||
Theorem | hh0oi 31424 | The zero operator in Hilbert space. (Contributed by NM, 7-Dec-2007.) (New usage is discouraged.) |
β’ π = β¨β¨ +β , Β·β β©, normββ© & β’ π = (π 0op π) β β’ 0hop = π | ||
Theorem | hhcno 31425 | The continuous operators of Hilbert space. (Contributed by Mario Carneiro, 19-May-2014.) (New usage is discouraged.) |
β’ π· = (normβ β ββ ) & β’ π½ = (MetOpenβπ·) β β’ ContOp = (π½ Cn π½) | ||
Theorem | hhcnf 31426 | The continuous functionals of Hilbert space. (Contributed by Mario Carneiro, 19-May-2014.) (New usage is discouraged.) |
β’ π· = (normβ β ββ ) & β’ π½ = (MetOpenβπ·) & β’ πΎ = (TopOpenββfld) β β’ ContFn = (π½ Cn πΎ) | ||
Theorem | dmadjrnb 31427 | The adjoint of an operator belongs to the adjoint function's domain. (Note: the converse is dependent on our definition of function value, since it uses ndmfv 6926.) (Contributed by NM, 19-Feb-2006.) (New usage is discouraged.) |
β’ (π β dom adjβ β (adjββπ) β dom adjβ) | ||
Theorem | nmoplb 31428 | A lower bound for an operator norm. (Contributed by NM, 7-Feb-2006.) (New usage is discouraged.) |
β’ ((π: ββΆ β β§ π΄ β β β§ (normββπ΄) β€ 1) β (normββ(πβπ΄)) β€ (normopβπ)) | ||
Theorem | nmopub 31429* | An upper bound for an operator norm. (Contributed by NM, 7-Mar-2006.) (New usage is discouraged.) |
β’ ((π: ββΆ β β§ π΄ β β*) β ((normopβπ) β€ π΄ β βπ₯ β β ((normββπ₯) β€ 1 β (normββ(πβπ₯)) β€ π΄))) | ||
Theorem | nmopub2tALT 31430* | An upper bound for an operator norm. (Contributed by NM, 12-Apr-2006.) (New usage is discouraged.) (Proof modification is discouraged.) |
β’ ((π: ββΆ β β§ (π΄ β β β§ 0 β€ π΄) β§ βπ₯ β β (normββ(πβπ₯)) β€ (π΄ Β· (normββπ₯))) β (normopβπ) β€ π΄) | ||
Theorem | nmopub2tHIL 31431* | An upper bound for an operator norm. (Contributed by NM, 13-Dec-2007.) (New usage is discouraged.) |
β’ ((π: ββΆ β β§ (π΄ β β β§ 0 β€ π΄) β§ βπ₯ β β (normββ(πβπ₯)) β€ (π΄ Β· (normββπ₯))) β (normopβπ) β€ π΄) | ||
Theorem | nmopge0 31432 | The norm of any Hilbert space operator is nonnegative. (Contributed by NM, 9-Feb-2006.) (New usage is discouraged.) |
β’ (π: ββΆ β β 0 β€ (normopβπ)) | ||
Theorem | nmopgt0 31433 | A linear Hilbert space operator that is not identically zero has a positive norm. (Contributed by NM, 9-Feb-2006.) (New usage is discouraged.) |
β’ (π: ββΆ β β ((normopβπ) β 0 β 0 < (normopβπ))) | ||
Theorem | cnopc 31434* | Basic continuity property of a continuous Hilbert space operator. (Contributed by NM, 2-Feb-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ ((π β ContOp β§ π΄ β β β§ π΅ β β+) β βπ₯ β β+ βπ¦ β β ((normββ(π¦ ββ π΄)) < π₯ β (normββ((πβπ¦) ββ (πβπ΄))) < π΅)) | ||
Theorem | lnopl 31435 | Basic linearity property of a linear Hilbert space operator. (Contributed by NM, 22-Jan-2006.) (New usage is discouraged.) |
β’ (((π β LinOp β§ π΄ β β) β§ (π΅ β β β§ πΆ β β)) β (πβ((π΄ Β·β π΅) +β πΆ)) = ((π΄ Β·β (πβπ΅)) +β (πβπΆ))) | ||
Theorem | unop 31436 | Basic inner product property of a unitary operator. (Contributed by NM, 22-Jan-2006.) (New usage is discouraged.) |
β’ ((π β UniOp β§ π΄ β β β§ π΅ β β) β ((πβπ΄) Β·ih (πβπ΅)) = (π΄ Β·ih π΅)) | ||
Theorem | unopf1o 31437 | A unitary operator in Hilbert space is one-to-one and onto. (Contributed by NM, 22-Jan-2006.) (New usage is discouraged.) |
β’ (π β UniOp β π: ββ1-1-ontoβ β) | ||
Theorem | unopnorm 31438 | A unitary operator is idempotent in the norm. (Contributed by NM, 25-Feb-2006.) (New usage is discouraged.) |
β’ ((π β UniOp β§ π΄ β β) β (normββ(πβπ΄)) = (normββπ΄)) | ||
Theorem | cnvunop 31439 | The inverse (converse) of a unitary operator in Hilbert space is unitary. Theorem in [AkhiezerGlazman] p. 72. (Contributed by NM, 22-Jan-2006.) (New usage is discouraged.) |
β’ (π β UniOp β β‘π β UniOp) | ||
Theorem | unopadj 31440 | The inverse (converse) of a unitary operator is its adjoint. Equation 2 of [AkhiezerGlazman] p. 72. (Contributed by NM, 22-Jan-2006.) (New usage is discouraged.) |
β’ ((π β UniOp β§ π΄ β β β§ π΅ β β) β ((πβπ΄) Β·ih π΅) = (π΄ Β·ih (β‘πβπ΅))) | ||
Theorem | unoplin 31441 | A unitary operator is linear. Theorem in [AkhiezerGlazman] p. 72. (Contributed by NM, 22-Jan-2006.) (New usage is discouraged.) |
β’ (π β UniOp β π β LinOp) | ||
Theorem | counop 31442 | The composition of two unitary operators is unitary. (Contributed by NM, 22-Jan-2006.) (New usage is discouraged.) |
β’ ((π β UniOp β§ π β UniOp) β (π β π) β UniOp) | ||
Theorem | hmop 31443 | Basic inner product property of a Hermitian operator. (Contributed by NM, 19-Mar-2006.) (New usage is discouraged.) |
β’ ((π β HrmOp β§ π΄ β β β§ π΅ β β) β (π΄ Β·ih (πβπ΅)) = ((πβπ΄) Β·ih π΅)) | ||
Theorem | hmopre 31444 | The inner product of the value and argument of a Hermitian operator is real. (Contributed by NM, 23-Jul-2006.) (New usage is discouraged.) |
β’ ((π β HrmOp β§ π΄ β β) β ((πβπ΄) Β·ih π΄) β β) | ||
Theorem | nmfnlb 31445 | A lower bound for a functional norm. (Contributed by NM, 14-Feb-2006.) (New usage is discouraged.) |
β’ ((π: ββΆβ β§ π΄ β β β§ (normββπ΄) β€ 1) β (absβ(πβπ΄)) β€ (normfnβπ)) | ||
Theorem | nmfnleub 31446* | An upper bound for the norm of a functional. (Contributed by NM, 24-May-2006.) (Revised by Mario Carneiro, 7-Sep-2014.) (New usage is discouraged.) |
β’ ((π: ββΆβ β§ π΄ β β*) β ((normfnβπ) β€ π΄ β βπ₯ β β ((normββπ₯) β€ 1 β (absβ(πβπ₯)) β€ π΄))) | ||
Theorem | nmfnleub2 31447* | An upper bound for the norm of a functional. (Contributed by NM, 24-May-2006.) (New usage is discouraged.) |
β’ ((π: ββΆβ β§ (π΄ β β β§ 0 β€ π΄) β§ βπ₯ β β (absβ(πβπ₯)) β€ (π΄ Β· (normββπ₯))) β (normfnβπ) β€ π΄) | ||
Theorem | nmfnge0 31448 | The norm of any Hilbert space functional is nonnegative. (Contributed by NM, 24-May-2006.) (New usage is discouraged.) |
β’ (π: ββΆβ β 0 β€ (normfnβπ)) | ||
Theorem | elnlfn 31449 | Membership in the null space of a Hilbert space functional. (Contributed by NM, 11-Feb-2006.) (Revised by Mario Carneiro, 17-Nov-2013.) (New usage is discouraged.) |
β’ (π: ββΆβ β (π΄ β (nullβπ) β (π΄ β β β§ (πβπ΄) = 0))) | ||
Theorem | elnlfn2 31450 | Membership in the null space of a Hilbert space functional. (Contributed by NM, 11-Feb-2006.) (Revised by Mario Carneiro, 17-Nov-2013.) (New usage is discouraged.) |
β’ ((π: ββΆβ β§ π΄ β (nullβπ)) β (πβπ΄) = 0) | ||
Theorem | cnfnc 31451* | Basic continuity property of a continuous functional. (Contributed by NM, 11-Feb-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ ((π β ContFn β§ π΄ β β β§ π΅ β β+) β βπ₯ β β+ βπ¦ β β ((normββ(π¦ ββ π΄)) < π₯ β (absβ((πβπ¦) β (πβπ΄))) < π΅)) | ||
Theorem | lnfnl 31452 | Basic linearity property of a linear functional. (Contributed by NM, 11-Feb-2006.) (New usage is discouraged.) |
β’ (((π β LinFn β§ π΄ β β) β§ (π΅ β β β§ πΆ β β)) β (πβ((π΄ Β·β π΅) +β πΆ)) = ((π΄ Β· (πβπ΅)) + (πβπΆ))) | ||
Theorem | adjcl 31453 | Closure of the adjoint of a Hilbert space operator. (Contributed by NM, 17-Jun-2006.) (New usage is discouraged.) |
β’ ((π β dom adjβ β§ π΄ β β) β ((adjββπ)βπ΄) β β) | ||
Theorem | adj1 31454 | Property of an adjoint Hilbert space operator. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ ((π β dom adjβ β§ π΄ β β β§ π΅ β β) β (π΄ Β·ih (πβπ΅)) = (((adjββπ)βπ΄) Β·ih π΅)) | ||
Theorem | adj2 31455 | Property of an adjoint Hilbert space operator. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ ((π β dom adjβ β§ π΄ β β β§ π΅ β β) β ((πβπ΄) Β·ih π΅) = (π΄ Β·ih ((adjββπ)βπ΅))) | ||
Theorem | adjeq 31456* | A property that determines the adjoint of a Hilbert space operator. (Contributed by NM, 20-Feb-2006.) (New usage is discouraged.) |
β’ ((π: ββΆ β β§ π: ββΆ β β§ βπ₯ β β βπ¦ β β ((πβπ₯) Β·ih π¦) = (π₯ Β·ih (πβπ¦))) β (adjββπ) = π) | ||
Theorem | adjadj 31457 | Double adjoint. Theorem 3.11(iv) of [Beran] p. 106. (Contributed by NM, 15-Feb-2006.) (New usage is discouraged.) |
β’ (π β dom adjβ β (adjββ(adjββπ)) = π) | ||
Theorem | adjvalval 31458* | Value of the value of the adjoint function. (Contributed by NM, 22-Feb-2006.) (Proof shortened by Mario Carneiro, 10-Sep-2015.) (New usage is discouraged.) |
β’ ((π β dom adjβ β§ π΄ β β) β ((adjββπ)βπ΄) = (β©π€ β β βπ₯ β β ((πβπ₯) Β·ih π΄) = (π₯ Β·ih π€))) | ||
Theorem | unopadj2 31459 | The adjoint of a unitary operator is its inverse (converse). Equation 2 of [AkhiezerGlazman] p. 72. (Contributed by NM, 23-Feb-2006.) (New usage is discouraged.) |
β’ (π β UniOp β (adjββπ) = β‘π) | ||
Theorem | hmopadj 31460 | A Hermitian operator is self-adjoint. (Contributed by NM, 24-Mar-2006.) (New usage is discouraged.) |
β’ (π β HrmOp β (adjββπ) = π) | ||
Theorem | hmdmadj 31461 | Every Hermitian operator has an adjoint. (Contributed by NM, 24-Mar-2006.) (New usage is discouraged.) |
β’ (π β HrmOp β π β dom adjβ) | ||
Theorem | hmopadj2 31462 | An operator is Hermitian iff it is self-adjoint. Definition of Hermitian in [Halmos] p. 41. (Contributed by NM, 9-Apr-2006.) (New usage is discouraged.) |
β’ (π β dom adjβ β (π β HrmOp β (adjββπ) = π)) | ||
Theorem | hmoplin 31463 | A Hermitian operator is linear. (Contributed by NM, 24-Mar-2006.) (New usage is discouraged.) |
β’ (π β HrmOp β π β LinOp) | ||
Theorem | brafval 31464* | The bra of a vector, expressed as β¨π΄ β£ in Dirac notation. See df-bra 31371. (Contributed by NM, 15-May-2006.) (Revised by Mario Carneiro, 23-Aug-2014.) (New usage is discouraged.) |
β’ (π΄ β β β (braβπ΄) = (π₯ β β β¦ (π₯ Β·ih π΄))) | ||
Theorem | braval 31465 | A bra-ket juxtaposition, expressed as β¨π΄ β£ π΅β© in Dirac notation, equals the inner product of the vectors. Based on definition of bra in [Prugovecki] p. 186. (Contributed by NM, 15-May-2006.) (Revised by Mario Carneiro, 17-Nov-2013.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β) β ((braβπ΄)βπ΅) = (π΅ Β·ih π΄)) | ||
Theorem | braadd 31466 | Linearity property of bra for addition. (Contributed by NM, 23-May-2006.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β β§ πΆ β β) β ((braβπ΄)β(π΅ +β πΆ)) = (((braβπ΄)βπ΅) + ((braβπ΄)βπΆ))) | ||
Theorem | bramul 31467 | Linearity property of bra for multiplication. (Contributed by NM, 23-May-2006.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β β§ πΆ β β) β ((braβπ΄)β(π΅ Β·β πΆ)) = (π΅ Β· ((braβπ΄)βπΆ))) | ||
Theorem | brafn 31468 | The bra function is a functional. (Contributed by NM, 23-May-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ (π΄ β β β (braβπ΄): ββΆβ) | ||
Theorem | bralnfn 31469 | The Dirac bra function is a linear functional. (Contributed by NM, 23-May-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ (π΄ β β β (braβπ΄) β LinFn) | ||
Theorem | bracl 31470 | Closure of the bra function. (Contributed by NM, 23-May-2006.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β) β ((braβπ΄)βπ΅) β β) | ||
Theorem | bra0 31471 | The Dirac bra of the zero vector. (Contributed by NM, 25-May-2006.) (Revised by Mario Carneiro, 23-Aug-2014.) (New usage is discouraged.) |
β’ (braβ0β) = ( β Γ {0}) | ||
Theorem | brafnmul 31472 | Anti-linearity property of bra functional for multiplication. (Contributed by NM, 31-May-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β) β (braβ(π΄ Β·β π΅)) = ((ββπ΄) Β·fn (braβπ΅))) | ||
Theorem | kbfval 31473* | The outer product of two vectors, expressed as β£ π΄β©β¨π΅ β£ in Dirac notation. See df-kb 31372. (Contributed by NM, 15-May-2006.) (Revised by Mario Carneiro, 23-Aug-2014.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β) β (π΄ ketbra π΅) = (π₯ β β β¦ ((π₯ Β·ih π΅) Β·β π΄))) | ||
Theorem | kbop 31474 | The outer product of two vectors, expressed as β£ π΄β©β¨π΅ β£ in Dirac notation, is an operator. (Contributed by NM, 30-May-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β) β (π΄ ketbra π΅): ββΆ β) | ||
Theorem | kbval 31475 | The value of the operator resulting from the outer product β£ π΄β© β¨π΅ β£ of two vectors. Equation 8.1 of [Prugovecki] p. 376. (Contributed by NM, 15-May-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β β§ πΆ β β) β ((π΄ ketbra π΅)βπΆ) = ((πΆ Β·ih π΅) Β·β π΄)) | ||
Theorem | kbmul 31476 | Multiplication property of outer product. (Contributed by NM, 31-May-2006.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π΅ β β β§ πΆ β β) β ((π΄ Β·β π΅) ketbra πΆ) = (π΅ ketbra ((ββπ΄) Β·β πΆ))) | ||
Theorem | kbpj 31477 | If a vector π΄ has norm 1, the outer product β£ π΄β©β¨π΄ β£ is the projector onto the subspace spanned by π΄. http://en.wikipedia.org/wiki/Bra-ket#Linear%5Foperators. (Contributed by NM, 30-May-2006.) (New usage is discouraged.) |
β’ ((π΄ β β β§ (normββπ΄) = 1) β (π΄ ketbra π΄) = (projββ(spanβ{π΄}))) | ||
Theorem | eleigvec 31478* | Membership in the set of eigenvectors of a Hilbert space operator. (Contributed by NM, 11-Mar-2006.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.) |
β’ (π: ββΆ β β (π΄ β (eigvecβπ) β (π΄ β β β§ π΄ β 0β β§ βπ₯ β β (πβπ΄) = (π₯ Β·β π΄)))) | ||
Theorem | eleigvec2 31479 | Membership in the set of eigenvectors of a Hilbert space operator. (Contributed by NM, 18-Mar-2006.) (New usage is discouraged.) |
β’ (π: ββΆ β β (π΄ β (eigvecβπ) β (π΄ β β β§ π΄ β 0β β§ (πβπ΄) β (spanβ{π΄})))) | ||
Theorem | eleigveccl 31480 | Closure of an eigenvector of a Hilbert space operator. (Contributed by NM, 23-Mar-2006.) (New usage is discouraged.) |
β’ ((π: ββΆ β β§ π΄ β (eigvecβπ)) β π΄ β β) | ||
Theorem | eigvalval 31481 | The eigenvalue of an eigenvector of a Hilbert space operator. (Contributed by NM, 11-Mar-2006.) (New usage is discouraged.) |
β’ ((π: ββΆ β β§ π΄ β (eigvecβπ)) β ((eigvalβπ)βπ΄) = (((πβπ΄) Β·ih π΄) / ((normββπ΄)β2))) | ||
Theorem | eigvalcl 31482 | An eigenvalue is a complex number. (Contributed by NM, 11-Mar-2006.) (New usage is discouraged.) |
β’ ((π: ββΆ β β§ π΄ β (eigvecβπ)) β ((eigvalβπ)βπ΄) β β) | ||
Theorem | eigvec1 31483 | Property of an eigenvector. (Contributed by NM, 12-Mar-2006.) (New usage is discouraged.) |
β’ ((π: ββΆ β β§ π΄ β (eigvecβπ)) β ((πβπ΄) = (((eigvalβπ)βπ΄) Β·β π΄) β§ π΄ β 0β)) | ||
Theorem | eighmre 31484 | The eigenvalues of a Hermitian operator are real. Equation 1.30 of [Hughes] p. 49. (Contributed by NM, 19-Mar-2006.) (New usage is discouraged.) |
β’ ((π β HrmOp β§ π΄ β (eigvecβπ)) β ((eigvalβπ)βπ΄) β β) | ||
Theorem | eighmorth 31485 | Eigenvectors of a Hermitian operator with distinct eigenvalues are orthogonal. Equation 1.31 of [Hughes] p. 49. (Contributed by NM, 23-Mar-2006.) (New usage is discouraged.) |
β’ (((π β HrmOp β§ π΄ β (eigvecβπ)) β§ (π΅ β (eigvecβπ) β§ ((eigvalβπ)βπ΄) β ((eigvalβπ)βπ΅))) β (π΄ Β·ih π΅) = 0) | ||
Theorem | nmopnegi 31486 | Value of the norm of the negative of a Hilbert space operator. Unlike nmophmi 31552, the operator does not have to be bounded. (Contributed by NM, 10-Mar-2006.) (New usage is discouraged.) |
β’ π: ββΆ β β β’ (normopβ(-1 Β·op π)) = (normopβπ) | ||
Theorem | lnop0 31487 | The value of a linear Hilbert space operator at zero is zero. Remark in [Beran] p. 99. (Contributed by NM, 13-Aug-2006.) (New usage is discouraged.) |
β’ (π β LinOp β (πβ0β) = 0β) | ||
Theorem | lnopmul 31488 | Multiplicative property of a linear Hilbert space operator. (Contributed by NM, 13-Aug-2006.) (New usage is discouraged.) |
β’ ((π β LinOp β§ π΄ β β β§ π΅ β β) β (πβ(π΄ Β·β π΅)) = (π΄ Β·β (πβπ΅))) | ||
Theorem | lnopli 31489 | Basic scalar product property of a linear Hilbert space operator. (Contributed by NM, 23-Jan-2006.) (New usage is discouraged.) |
β’ π β LinOp β β’ ((π΄ β β β§ π΅ β β β§ πΆ β β) β (πβ((π΄ Β·β π΅) +β πΆ)) = ((π΄ Β·β (πβπ΅)) +β (πβπΆ))) | ||
Theorem | lnopfi 31490 | A linear Hilbert space operator is a Hilbert space operator. (Contributed by NM, 23-Jan-2006.) (New usage is discouraged.) |
β’ π β LinOp β β’ π: ββΆ β | ||
Theorem | lnop0i 31491 | The value of a linear Hilbert space operator at zero is zero. Remark in [Beran] p. 99. (Contributed by NM, 11-May-2005.) (New usage is discouraged.) |
β’ π β LinOp β β’ (πβ0β) = 0β | ||
Theorem | lnopaddi 31492 | Additive property of a linear Hilbert space operator. (Contributed by NM, 11-May-2005.) (New usage is discouraged.) |
β’ π β LinOp β β’ ((π΄ β β β§ π΅ β β) β (πβ(π΄ +β π΅)) = ((πβπ΄) +β (πβπ΅))) | ||
Theorem | lnopmuli 31493 | Multiplicative property of a linear Hilbert space operator. (Contributed by NM, 11-May-2005.) (New usage is discouraged.) |
β’ π β LinOp β β’ ((π΄ β β β§ π΅ β β) β (πβ(π΄ Β·β π΅)) = (π΄ Β·β (πβπ΅))) | ||
Theorem | lnopaddmuli 31494 | Sum/product property of a linear Hilbert space operator. (Contributed by NM, 1-Jul-2005.) (New usage is discouraged.) |
β’ π β LinOp β β’ ((π΄ β β β§ π΅ β β β§ πΆ β β) β (πβ(π΅ +β (π΄ Β·β πΆ))) = ((πβπ΅) +β (π΄ Β·β (πβπΆ)))) | ||
Theorem | lnopsubi 31495 | Subtraction property for a linear Hilbert space operator. (Contributed by NM, 1-Jul-2005.) (New usage is discouraged.) |
β’ π β LinOp β β’ ((π΄ β β β§ π΅ β β) β (πβ(π΄ ββ π΅)) = ((πβπ΄) ββ (πβπ΅))) | ||
Theorem | lnopsubmuli 31496 | Subtraction/product property of a linear Hilbert space operator. (Contributed by NM, 2-Jul-2005.) (New usage is discouraged.) |
β’ π β LinOp β β’ ((π΄ β β β§ π΅ β β β§ πΆ β β) β (πβ(π΅ ββ (π΄ Β·β πΆ))) = ((πβπ΅) ββ (π΄ Β·β (πβπΆ)))) | ||
Theorem | lnopmulsubi 31497 | Product/subtraction property of a linear Hilbert space operator. (Contributed by NM, 2-Jul-2005.) (New usage is discouraged.) |
β’ π β LinOp β β’ ((π΄ β β β§ π΅ β β β§ πΆ β β) β (πβ((π΄ Β·β π΅) ββ πΆ)) = ((π΄ Β·β (πβπ΅)) ββ (πβπΆ))) | ||
Theorem | homco2 31498 | Move a scalar product out of a composition of operators. The operator π must be linear, unlike homco1 31322 that works for any operators. (Contributed by NM, 13-Aug-2006.) (New usage is discouraged.) |
β’ ((π΄ β β β§ π β LinOp β§ π: ββΆ β) β (π β (π΄ Β·op π)) = (π΄ Β·op (π β π))) | ||
Theorem | idunop 31499 | The identity function (restricted to Hilbert space) is a unitary operator. (Contributed by NM, 21-Jan-2006.) (New usage is discouraged.) |
β’ ( I βΎ β) β UniOp | ||
Theorem | 0cnop 31500 | The identically zero function is a continuous Hilbert space operator. (Contributed by NM, 7-Feb-2006.) (New usage is discouraged.) |
β’ 0hop β ContOp |
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